]>
git.immae.eu Git - github/shaarli/Shaarli.git/blob - index.php
2 // Shaarli 0.0.45beta - Shaare your links...
3 // The personal, minimalist, super-fast, no-database Delicious clone. By sebsauvage.net
4 // http://sebsauvage.net/wiki/doku.php?id=php:shaarli
5 // Licence: http://www.opensource.org/licenses/zlib-license.php
6 // Requires: PHP 5.1.x (but autocomplete fields will only work if you have PHP 5.2.x)
7 // -----------------------------------------------------------------------------------------------
8 // NEVER TRUST IN PHP.INI
9 // Some hosts do not define a default timezone in php.ini,
10 // so we have to do this for avoid the strict standard error.
11 date_default_timezone_set ( 'UTC' );
13 // -----------------------------------------------------------------------------------------------
14 // Hardcoded parameter (These parameters can be overwritten by creating the file /data/options.php)
15 $GLOBALS [ 'config' ][ 'DATADIR' ] = 'data' ; // Data subdirectory
16 $GLOBALS [ 'config' ][ 'CONFIG_FILE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/config.php' ; // Configuration file (user login/password)
17 $GLOBALS [ 'config' ][ 'DATASTORE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/datastore.php' ; // Data storage file.
18 $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ] = 20 ; // Default links per page.
19 $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/ipbans.php' ; // File storage for failures and bans.
20 $GLOBALS [ 'config' ][ 'BAN_AFTER' ] = 4 ; // Ban IP after this many failures.
21 $GLOBALS [ 'config' ][ 'BAN_DURATION' ] = 1800 ; // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
22 $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ] = false ; // If true, anyone can add/edit/delete links without having to login
23 $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] = false ; // If true, the moment when links were saved are not shown to users that are not logged in.
24 $GLOBALS [ 'config' ][ 'SHOW_ATOM' ] = false ; // If true, an extra "ATOM feed" button will be displayed in the toolbar
25 $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ] = true ; // Enable thumbnails in links.
26 $GLOBALS [ 'config' ][ 'CACHEDIR' ] = 'cache' ; // Cache directory for thumbnails for SLOW services (like flickr)
27 $GLOBALS [ 'config' ][ 'PAGECACHE' ] = 'pagecache' ; // Page cache directory.
28 $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ] = true ; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce web space usage.
29 $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ] = '' ; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
30 $GLOBALS [ 'config' ][ 'RAINTPL_TMP' ] = 'tmp/' ; // Raintpl cache directory (keep the trailing slash!)
31 $GLOBALS [ 'config' ][ 'RAINTPL_TPL' ] = 'tpl/' ; // Raintpl template directory (keep the trailing slash!)
32 $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/lastupdatecheck.txt' ; // For updates check of Shaarli.
33 $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ] = 86400 ; // Updates check frequency for Shaarli. 86400 seconds=24 hours
34 // Note: You must have publisher.php in the same directory as Shaarli index.php
35 $GLOBALS [ 'config' ][ 'ARCHIVE_ORG' ] = false ; // For each link, add a link to an archived version on archive.org
36 $GLOBALS [ 'config' ][ 'ENABLE_RSS_PERMALINKS' ] = true ; // Enable RSS permalinks by default. This corresponds to the default behavior of shaarli before this was added as an option.
37 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ] = false ;
38 // -----------------------------------------------------------------------------------------------
39 // You should not touch below (or at your own risks!)
40 // Optional config file.
41 if ( is_file ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' )) require ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' );
43 define ( 'shaarli_version' , '0.0.45beta' );
44 // http://server.com/x/shaarli --> /shaarli/
45 define ( 'WEB_PATH' , substr ( $_SERVER [ "REQUEST_URI" ], 0 , 1 +
strrpos ( $_SERVER [ "REQUEST_URI" ], '/' , 0 )));
47 // Force cookie path (but do not change lifetime)
48 $cookie = session_get_cookie_params ();
49 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
50 session_set_cookie_params ( $cookie [ 'lifetime' ], $cookiedir , $_SERVER [ 'SERVER_NAME' ]); // Set default cookie expiration and path.
52 // Set session parameters on server side.
53 define ( 'INACTIVITY_TIMEOUT' , 3600 ); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
54 ini_set ( 'session.use_cookies' , 1 ); // Use cookies to store session.
55 ini_set ( 'session.use_only_cookies' , 1 ); // Force cookies for session (phpsessionID forbidden in URL).
56 ini_set ( 'session.use_trans_sid' , false ); // Prevent PHP form using sessionID in URL if cookies are disabled.
57 session_name ( 'shaarli' );
58 if ( session_id () == '' ) session_start (); // Start session if needed (Some server auto-start sessions).
61 ini_set ( 'max_input_time' , '60' ); // High execution time in case of problematic imports/exports.
62 ini_set ( 'memory_limit' , '128M' ); // Try to set max upload file size and read (May not work on some hosts).
63 ini_set ( 'post_max_size' , '16M' );
64 ini_set ( 'upload_max_filesize' , '16M' );
66 error_reporting ( E_ALL^E_WARNING
); // See all error except warnings.
67 //error_reporting(-1); // See all errors (for debugging only)
70 require_once 'application/LinkDB.php' ;
71 require_once 'application/Utils.php' ;
73 include "inc/rain.tpl.class.php" ; //include Rain TPL
74 raintpl
:: $tpl_dir = $GLOBALS [ 'config' ][ 'RAINTPL_TPL' ]; // template directory
75 raintpl
:: $cache_dir = $GLOBALS [ 'config' ][ 'RAINTPL_TMP' ]; // cache directory
77 ob_start (); // Output buffering for the page cache.
80 // In case stupid admin has left magic_quotes enabled in php.ini:
81 if ( get_magic_quotes_gpc ())
83 function stripslashes_deep ( $value ) { $value
= is_array ( $value
) ? array_map ( 'stripslashes_deep' , $value
) : stripslashes ( $value
); return $value
; }
84 $_POST = array_map ( 'stripslashes_deep' , $_POST );
85 $_GET = array_map ( 'stripslashes_deep' , $_GET );
86 $_COOKIE = array_map ( 'stripslashes_deep' , $_COOKIE );
89 // Prevent caching on client side or proxy: (yes, it's ugly)
90 header ( "Last-Modified: " . gmdate ( "D, d M Y H:i:s" ) . " GMT" );
91 header ( "Cache-Control: no-store, no-cache, must-revalidate" );
92 header ( "Cache-Control: post-check=0, pre-check=0" , false );
93 header ( "Pragma: no-cache" );
95 // Directories creations (Note that your web host may require different rights than 705.)
96 if (! is_writable ( realpath ( dirname ( __FILE__
)))) die ( '<pre>ERROR: Shaarli does not have the right to write in its own directory.</pre>' );
98 // Handling of old config file which do not have the new parameters.
99 if ( empty ( $GLOBALS [ 'title' ])) $GLOBALS [ 'title' ]= 'Shared links on ' . escape ( indexUrl ());
100 if ( empty ( $GLOBALS [ 'timezone' ])) $GLOBALS [ 'timezone' ]= date_default_timezone_get ();
101 if ( empty ( $GLOBALS [ 'redirector' ])) $GLOBALS [ 'redirector' ]= '' ;
102 if ( empty ( $GLOBALS [ 'disablesessionprotection' ])) $GLOBALS [ 'disablesessionprotection' ]= false ;
103 if ( empty ( $GLOBALS [ 'disablejquery' ])) $GLOBALS [ 'disablejquery' ]= false ;
104 if ( empty ( $GLOBALS [ 'privateLinkByDefault' ])) $GLOBALS [ 'privateLinkByDefault' ]= false ;
105 if ( empty ( $GLOBALS [ 'titleLink' ])) $GLOBALS [ 'titleLink' ]= '?' ;
106 // I really need to rewrite Shaarli with a proper configuation manager.
108 // Run config screen if first run:
109 if (! is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ])) install ();
111 require $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]; // Read login/password hash into $GLOBALS.
112 $GLOBALS [ 'title' ] = ! empty ( $GLOBALS [ 'title' ]) ? escape ( $GLOBALS [ 'title' ]) : '' ;
113 $GLOBALS [ 'titleLink' ] = ! empty ( $GLOBALS [ 'titleLink' ]) ? escape ( $GLOBALS [ 'titleLink' ]) : '' ;
114 $GLOBALS [ 'redirector' ] = ! empty ( $GLOBALS [ 'redirector' ]) ? escape ( $GLOBALS [ 'redirector' ]) : '' ;
116 // a token depending of deployment salt, user password, and the current ip
117 define ( 'STAY_SIGNED_IN_TOKEN' , sha1 ( $GLOBALS [ 'hash' ]. $_SERVER [ "REMOTE_ADDR" ]. $GLOBALS [ 'salt' ]));
119 autoLocale (); // Sniff browser language and set date format accordingly.
120 header ( 'Content-Type: text/html; charset=utf-8' ); // We use UTF-8 for proper international characters handling.
122 //==================================================================================================
123 // Checking session state (i.e. is the user still logged in)
124 //==================================================================================================
126 function setup_login_state () {
127 $userIsLoggedIn = false ; // By default, we do not consider the user as logged in;
128 $loginFailure = false ; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
129 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) {
130 $userIsLoggedIn = true ;
132 if (! isset ( $GLOBALS [ 'login' ])) {
133 $userIsLoggedIn = false ; // Shaarli is not configured yet.
134 $loginFailure = true ;
136 if ( isset ( $_COOKIE [ 'shaarli_staySignedIn' ]) &&
137 $_COOKIE [ 'shaarli_staySignedIn' ]=== STAY_SIGNED_IN_TOKEN
&&
141 $userIsLoggedIn = true ;
143 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
144 if ( empty ( $_SESSION [ 'uid' ]) ||
145 ( $GLOBALS [ 'disablesessionprotection' ]== false && $_SESSION [ 'ip' ]!= allIPs ()) ||
146 time () >= $_SESSION [ 'expires_on' ])
149 $userIsLoggedIn = false ;
150 $loginFailure = true ;
152 if (! empty ( $_SESSION [ 'longlastingsession' ])) {
153 $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // In case of "Stay signed in" checked.
156 $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Standard session expiration date.
158 if (! $loginFailure ) {
159 $userIsLoggedIn = true ;
162 return $userIsLoggedIn ;
164 //==================================================================================================
165 $userIsLoggedIn = setup_login_state ();
166 //==================================================================================================
167 //==================================================================================================
170 function checkphpversion ()
172 if ( version_compare ( PHP_VERSION
, '5.1.0' ) < 0 )
174 header ( 'Content-Type: text/plain; charset=utf-8' );
175 echo 'Your PHP version is obsolete! Shaarli requires at least php 5.1.0, and thus cannot run. Sorry. Your PHP version has known security vulnerabilities and should be updated as soon as possible.' ;
180 // Checks if an update is available for Shaarli.
181 // (at most once a day, and only for registered user.)
182 // Output: '' = no new version.
183 // other= the available version.
184 function checkUpdate ()
186 if (! isLoggedIn ()) return '' ; // Do not check versions for visitors.
187 if ( empty ( $GLOBALS [ 'config' ][ 'ENABLE_UPDATECHECK' ])) return '' ; // Do not check if the user doesn't want to.
189 // Get latest version number at most once a day.
190 if (! is_file ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]) || ( filemtime ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ])< time ()-( $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ])))
192 $version = shaarli_version
;
193 list ( $httpstatus , $headers , $data ) = getHTTP ( 'https://raw.githubusercontent.com/shaarli/Shaarli/master/shaarli_version.php' , 2 );
194 if ( strpos ( $httpstatus , '200 OK' )!== false ) $version = str_replace ( ' */ ?>' , '' , str_replace ( '<?php /* ' , '' , $data ));
195 // If failed, never mind. We don't want to bother the user with that.
196 file_put_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ], $version ); // touch file date
199 $newestversion = file_get_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]);
200 if ( version_compare ( $newestversion , shaarli_version
)== 1 ) return $newestversion ;
205 // -----------------------------------------------------------------------------------------------
206 // Simple cache system (mainly for the RSS/ATOM feeds).
210 private $url ; // Full URL of the page to cache (typically the value returned by pageUrl())
211 private $shouldBeCached ; // boolean: Should this url be cached?
212 private $filename ; // Name of the cache file for this url.
215 $url = URL (typically the value returned by pageUrl())
216 $shouldBeCached = boolean. If false, the cache will be disabled.
218 public function __construct ( $url , $shouldBeCached )
221 $this- > filename
= $GLOBALS [ 'config' ][ 'PAGECACHE' ]. '/' . sha1 ( $url ). '.cache' ;
222 $this- > shouldBeCached
= $shouldBeCached ;
225 // If the page should be cached and a cached version exists,
226 // returns the cached version (otherwise, return null).
227 public function cachedVersion ()
229 if (! $this- > shouldBeCached
) return null ;
230 if ( is_file ( $this- > filename
)) { return file_get_contents ( $this
-> filename
); exit ; }
234 // Put a page in the cache.
235 public function cache ( $page )
237 if (! $this- > shouldBeCached
) return ;
238 file_put_contents ( $this- > filename
, $page );
241 // Purge the whole cache.
242 // (call with pageCache::purgeCache())
243 public static function purgeCache ()
245 if ( is_dir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ]))
247 $handler = opendir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ]);
248 if ( $handler !== false )
250 while (( $filename = readdir ( $handler ))!== false )
252 if ( endsWith ( $filename , '.cache' )) { unlink ( $GLOBALS
[ 'config' ][ 'PAGECACHE' ]. '/' . $filename
); }
262 // -----------------------------------------------------------------------------------------------
264 function logm ( $message )
266 $t = strval ( date ( 'Y/m/d_H:i:s' )). ' - ' . $_SERVER [ "REMOTE_ADDR" ]. ' - ' . strval ( $message ). " \n " ;
267 file_put_contents ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/log.txt' , $t , FILE_APPEND
);
270 // In a string, converts URLs to clickable links.
271 // Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
272 function text2clickable ( $url )
274 $redir = empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ];
275 return preg_replace ( '!(((?:https?|ftp|file)://|apt:|magnet:)\S+[[:alnum:]]/?)!si' , '<a href="' . $redir . ' $1" rel="nofollow"> $1 </a>' , $url );
278 // This function inserts where relevant so that multiple spaces are properly displayed in HTML
279 // even in the absence of <pre> (This is used in description to keep text formatting)
280 function keepMultipleSpaces ( $text )
282 return str_replace ( ' ' , ' ' , $text );
285 // ------------------------------------------------------------------------------------------
286 // Sniff browser language to display dates in the right format automatically.
287 // (Note that is may not work on your server if the corresponding local is not installed.)
288 function autoLocale ()
290 $attempts = array ( 'en_US' ); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
291 if ( isset ( $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
292 { // (It's a bit crude, but it works very well. Preferred language is always presented first.)
293 if ( preg_match ( '/([a-z] {2} )-?([a-z] {2} )?/i' , $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ], $matches )) {
294 $loc = $matches [ 1 ] . (! empty ( $matches [ 2 ]) ? '_' . strtoupper ( $matches [ 2 ]) : '' );
295 $attempts = array ( $loc . '.UTF-8' , $loc , str_replace ( '_' , '-' , $loc ). '.UTF-8' , str_replace ( '_' , '-' , $loc ),
296 $loc . '_' . strtoupper ( $loc ). '.UTF-8' , $loc . '_' . strtoupper ( $loc ),
297 $loc . '_' . $loc . '.UTF-8' , $loc . '_' . $loc , $loc . '-' . strtoupper ( $loc ). '.UTF-8' ,
298 $loc . '-' . strtoupper ( $loc ), $loc . '-' . $loc . '.UTF-8' , $loc . '-' . $loc );
301 setlocale ( LC_TIME
, $attempts ); // LC_TIME = Set local for date/time format only.
304 // ------------------------------------------------------------------------------------------
305 // PubSubHubbub protocol support (if enabled) [UNTESTED]
306 // (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
307 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ])) include './publisher.php' ;
310 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
312 $p = new Publisher ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]);
314 indexUrl (). '?do=atom' ,
317 $p- > publish_update ( $topic_url );
321 // ------------------------------------------------------------------------------------------
322 // Session management
324 // Returns the IP address of the client (Used to prevent session cookie hijacking.)
327 $ip = $_SERVER [ "REMOTE_ADDR" ];
328 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
329 if ( isset ( $_SERVER [ 'HTTP_X_FORWARDED_FOR' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_X_FORWARDED_FOR' ]; }
330 if ( isset ( $_SERVER [ 'HTTP_CLIENT_IP' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_CLIENT_IP' ]; }
334 function fillSessionInfo () {
335 $_SESSION [ 'uid' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Generate unique random number (different than phpsessionid)
336 $_SESSION [ 'ip' ]= allIPs (); // We store IP address(es) of the client to make sure session is not hijacked.
337 $_SESSION [ 'username' ]= $GLOBALS [ 'login' ];
338 $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Set session expiration.
341 // Check that user/password is correct.
342 function check_auth ( $login , $password )
344 $hash = sha1 ( $password . $login . $GLOBALS [ 'salt' ]);
345 if ( $login == $GLOBALS [ 'login' ] && $hash == $GLOBALS [ 'hash' ])
346 { // Login/password is correct.
348 logm ( 'Login successful' );
351 logm ( 'Login failed for user ' . $login );
355 // Returns true if the user is logged in.
356 function isLoggedIn ()
358 global $userIsLoggedIn ;
359 return $userIsLoggedIn ;
364 if ( isset ( $_SESSION )) {
365 unset ( $_SESSION [ 'uid' ]);
366 unset ( $_SESSION [ 'ip' ]);
367 unset ( $_SESSION [ 'username' ]);
368 unset ( $_SESSION [ 'privateonly' ]);
370 setcookie ( 'shaarli_staySignedIn' , FALSE , 0 , WEB_PATH
);
374 // ------------------------------------------------------------------------------------------
375 // Brute force protection system
376 // Several consecutive failed logins will ban the IP address for 30 minutes.
377 if (! 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 ?>" );
378 include $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ];
379 // Signal a failed login. Will ban the IP if too many failures:
380 function ban_loginFailed ()
382 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
383 if (! isset ( $gb [ 'FAILURES' ][ $ip ])) $gb [ 'FAILURES' ][ $ip ]= 0 ;
384 $gb [ 'FAILURES' ][ $ip ] ++
;
385 if ( $gb [ 'FAILURES' ][ $ip ]>( $GLOBALS [ 'config' ][ 'BAN_AFTER' ]- 1 ))
387 $gb [ 'BANS' ][ $ip ]= time () +
$GLOBALS [ 'config' ][ 'BAN_DURATION' ];
388 logm ( 'IP address banned from login' );
390 $GLOBALS [ 'IPBANS' ] = $gb ;
391 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
394 // Signals a successful login. Resets failed login counter.
395 function ban_loginOk ()
397 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
398 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
399 $GLOBALS [ 'IPBANS' ] = $gb ;
400 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
403 // Checks if the user CAN login. If 'true', the user can try to login.
404 function ban_canLogin ()
406 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
407 if ( isset ( $gb [ 'BANS' ][ $ip ]))
409 // User is banned. Check if the ban has expired:
410 if ( $gb [ 'BANS' ][ $ip ]<= time ())
411 { // Ban expired, user can try to login again.
413 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
414 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
415 return true ; // Ban has expired, user can login.
417 return false ; // User is banned.
419 return true ; // User is not banned.
422 // ------------------------------------------------------------------------------------------
423 // Process login form: Check if login/password is correct.
424 if ( isset ( $_POST [ 'login' ]))
426 if (! ban_canLogin ()) die ( 'I said: NO. You are banned for the moment. Go away.' );
427 if ( isset ( $_POST [ 'password' ]) && tokenOk ( $_POST [ 'token' ]) && ( check_auth ( $_POST [ 'login' ], $_POST [ 'password' ])))
428 { // Login/password is OK.
430 // If user wants to keep the session cookie even after the browser closes:
431 if (! empty ( $_POST [ 'longlastingsession' ]))
433 setcookie ( 'shaarli_staySignedIn' , STAY_SIGNED_IN_TOKEN
, time () +
31536000 , WEB_PATH
);
434 $_SESSION [ 'longlastingsession' ]= 31536000 ; // (31536000 seconds = 1 year)
435 $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // Set session expiration on server-side.
437 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
438 session_set_cookie_params ( $_SESSION [ 'longlastingsession' ], $cookiedir , $_SERVER [ 'SERVER_NAME' ]); // Set session cookie expiration on client side
439 // Note: Never forget the trailing slash on the cookie path!
440 session_regenerate_id ( true ); // Send cookie with new expiration date to browser.
442 else // Standard session expiration (=when browser closes)
444 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
445 session_set_cookie_params ( 0 , $cookiedir , $_SERVER [ 'SERVER_NAME' ]); // 0 means "When browser closes"
446 session_regenerate_id ( true );
448 // Optional redirect after login:
449 if ( isset ( $_GET [ 'post' ])) { header ( 'Location: ?post=' . urlencode ( $_GET
[ 'post' ]).(! empty ( $_GET
[ 'title' ])? '&title=' . urlencode ( $_GET
[ 'title' ]): '' ).(! empty ( $_GET
[ 'description' ])? '&description=' . urlencode ( $_GET
[ 'description' ]): '' ).(! empty ( $_GET
[ 'source' ])? '&source=' . urlencode ( $_GET
[ 'source' ]): '' )); exit ; }
450 if ( isset ( $_POST [ 'returnurl' ]))
452 if ( endsWith ( $_POST [ 'returnurl' ], '?do=login' )) { header ( 'Location: ?' ); exit ; } // Prevent loops over login screen.
453 header ( 'Location: ' . $_POST [ 'returnurl' ]); exit ;
455 header ( 'Location: ?' ); exit ;
461 if ( isset ( $_GET [ 'post' ])) { $redir
= '&post=' . urlencode ( $_GET
[ 'post' ]).(! empty ( $_GET
[ 'title' ])? '&title=' . urlencode ( $_GET
[ 'title' ]): '' ).(! empty ( $_GET
[ 'description' ])? '&description=' . urlencode ( $_GET
[ 'description' ]): '' ).(! empty ( $_GET
[ 'source' ])? '&source=' . urlencode ( $_GET
[ 'source' ]): '' ); }
462 echo '<script>alert("Wrong login/password.");document.location= \' ?do=login' . $redir . ' \' ;</script>' ; // Redirect to login screen.
467 // ------------------------------------------------------------------------------------------
468 // Misc utility functions:
470 // Returns the server URL (including port and http/https), without path.
471 // e.g. "http://myserver.com:8080"
472 // You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
475 $https = (! empty ( $_SERVER [ 'HTTPS' ]) && ( strtolower ( $_SERVER [ 'HTTPS' ])== 'on' )) || $_SERVER [ "SERVER_PORT" ]== '443' ; // HTTPS detection.
476 $serverport = ( $_SERVER [ "SERVER_PORT" ]== '80' || ( $https && $_SERVER [ "SERVER_PORT" ]== '443' ) ? '' : ':' . $_SERVER [ "SERVER_PORT" ]);
477 return 'http' .( $https ? 's' : '' ). '://' . $_SERVER [ 'SERVER_NAME' ]. $serverport ;
480 // Returns the absolute URL of current script, without the query.
481 // (e.g. http://sebsauvage.net/links/)
484 $scriptname = $_SERVER [ "SCRIPT_NAME" ];
485 // If the script is named 'index.php', we remove it (for better looking URLs,
486 // e.g. http://mysite.com/shaarli/?abcde instead of http://mysite.com/shaarli/index.php?abcde)
487 if ( endswith ( $scriptname , 'index.php' )) $scriptname = substr ( $scriptname , 0 , strlen ( $scriptname )- 9 );
488 return serverUrl () . $scriptname ;
491 // Returns the absolute URL of current script, WITH the query.
492 // (e.g. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
495 return indexUrl ().(! empty ( $_SERVER [ "QUERY_STRING" ]) ? '?' . $_SERVER [ "QUERY_STRING" ] : '' );
498 // Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
499 function return_bytes ( $val )
501 $val = trim ( $val ); $last = strtolower ( $val [ strlen ( $val )- 1 ]);
504 case 'g' : $val *= 1024 ;
505 case 'm' : $val *= 1024 ;
506 case 'k' : $val *= 1024 ;
511 // Try to determine max file size for uploads (POST).
512 // Returns an integer (in bytes)
513 function getMaxFileSize ()
515 $size1 = return_bytes ( ini_get ( 'post_max_size' ));
516 $size2 = return_bytes ( ini_get ( 'upload_max_filesize' ));
517 // Return the smaller of two:
518 $maxsize = min ( $size1 , $size2 );
519 // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
523 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
524 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
525 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
526 function linkdate2timestamp ( $linkdate )
528 if ( strcmp ( $linkdate , '_000000' ) !== 0 || ! $linkdate ){
530 $r = sscanf ( $linkdate , '%4d%2d%2d_%2d%2d%2d' , $Y , $M , $D , $h , $m , $s );
531 return mktime ( $h , $m , $s , $M , $D , $Y );
536 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
537 (used to build the pubDate attribute in RSS feed.) */
538 function linkdate2rfc822 ( $linkdate )
540 return date ( 'r' , linkdate2timestamp ( $linkdate )); // 'r' is for RFC822 date format.
543 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
544 (used to build the updated tags in ATOM feed.) */
545 function linkdate2iso8601 ( $linkdate )
547 return date ( 'c' , linkdate2timestamp ( $linkdate )); // 'c' is for ISO 8601 date format.
550 // Parse HTTP response headers and return an associative array.
551 function http_parse_headers_shaarli ( $headers )
554 foreach ( $headers as $header )
556 $i = strpos ( $header , ': ' );
559 $key = substr ( $header , 0 , $i );
560 $value = substr ( $header , $i +
2 , strlen ( $header )- $i-2 );
568 Input: $url : URL to get (http://...)
569 $timeout : Network timeout (will wait this many seconds for an anwser before giving up).
570 Output: An array. [0] = HTTP status message (e.g. "HTTP/1.1 200 OK") or error message
571 [1] = associative array containing HTTP response headers (e.g. echo getHTTP($url)[1]['Content-Type'])
573 Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
574 if (strpos($httpstatus,'200 OK')!==false)
575 echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
577 echo 'There was an error: '.htmlspecialchars($httpstatus)
579 function getHTTP ( $url , $timeout = 30 )
583 $options = array ( 'http' => array ( 'method' => 'GET' , 'timeout' => $timeout , 'user_agent' => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0' )); // Force network timeout
584 $context = stream_context_create ( $options );
585 $data = file_get_contents ( $url , false , $context ,- 1 , 4000000 ); // We download at most 4 Mb from source.
586 if (! $data ) { return array ( 'HTTP Error' , array (), '' ); }
587 $httpStatus = $http_response_header [ 0 ]; // e.g. "HTTP/1.1 200 OK"
588 $responseHeaders = http_parse_headers_shaarli ( $http_response_header );
589 return array ( $httpStatus , $responseHeaders , $data );
591 catch ( Exception
$e ) // getHTTP *can* fail silently (we don't care if the title cannot be fetched)
593 return array ( $e- > getMessage (), '' , '' );
597 // Extract title from an HTML document.
598 // (Returns an empty string if not found.)
599 function html_extract_title ( $html )
601 return preg_match ( '!<title>(.*?)</title>!is' , $html , $matches ) ? trim ( str_replace ( " \n " , ' ' , $matches [ 1 ])) : '' ;
604 // ------------------------------------------------------------------------------------------
605 // Token management for XSRF protection
606 // Token should be used in any form which acts on data (create,update,delete,import...).
607 if (! isset ( $_SESSION [ 'tokens' ])) $_SESSION [ 'tokens' ]= array (); // Token are attached to the session.
612 $rnd = sha1 ( uniqid ( '' , true ). '_' . mt_rand (). $GLOBALS [ 'salt' ]); // We generate a random string.
613 $_SESSION [ 'tokens' ][ $rnd ]= 1 ; // Store it on the server side.
617 // Tells if a token is OK. Using this function will destroy the token.
619 function tokenOk ( $token )
621 if ( isset ( $_SESSION [ 'tokens' ][ $token ]))
623 unset ( $_SESSION [ 'tokens' ][ $token ]); // Token is used: destroy it.
624 return true ; // Token is OK.
626 return false ; // Wrong token, or already used.
629 // ------------------------------------------------------------------------------------------
630 /* This class is in charge of building the final page.
631 (This is basically a wrapper around RainTPL which pre-fills some fields.)
633 p.assign('myfield','myvalue');
634 p.renderPage('mytemplate');
639 private $tpl ; // RainTPL template
641 function __construct ()
646 private function initialize ()
648 $this- > tpl
= new RainTPL
;
649 $this- > tpl
-> assign ( 'newversion' , escape ( checkUpdate ()));
650 $this- > tpl
-> assign ( 'feedurl' , escape ( indexUrl ()));
651 $searchcrits = '' ; // Search criteria
652 if (! empty ( $_GET [ 'searchtags' ])) $searchcrits .= '&searchtags=' . urlencode ( $_GET [ 'searchtags' ]);
653 elseif (! empty ( $_GET [ 'searchterm' ])) $searchcrits .= '&searchterm=' . urlencode ( $_GET [ 'searchterm' ]);
654 $this- > tpl
-> assign ( 'searchcrits' , $searchcrits );
655 $this- > tpl
-> assign ( 'source' , indexUrl ());
656 $this- > tpl
-> assign ( 'version' , shaarli_version
);
657 $this- > tpl
-> assign ( 'scripturl' , indexUrl ());
658 $this- > tpl
-> assign ( 'pagetitle' , 'Shaarli' );
659 $this- > tpl
-> assign ( 'privateonly' ,! empty ( $_SESSION [ 'privateonly' ])); // Show only private links?
660 if (! empty ( $GLOBALS [ 'title' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'title' ]);
661 if (! empty ( $GLOBALS [ 'titleLink' ])) $this- > tpl
-> assign ( 'titleLink' , $GLOBALS [ 'titleLink' ]);
662 if (! empty ( $GLOBALS [ 'pagetitle' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'pagetitle' ]);
663 $this- > tpl
-> assign ( 'shaarlititle' , empty ( $GLOBALS [ 'title' ]) ? 'Shaarli' : $GLOBALS [ 'title' ] );
667 // The following assign() method is basically the same as RainTPL (except that it's lazy)
668 public function assign ( $what , $where )
670 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
671 $this- > tpl
-> assign ( $what , $where );
674 // Render a specific page (using a template).
675 // e.g. pb.renderPage('picwall')
676 public function renderPage ( $page )
678 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
679 $this- > tpl
-> draw ( $page );
683 // ------------------------------------------------------------------------------------------
684 // Output the last N links in RSS 2.0 format.
687 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
689 // $usepermalink : If true, use permalink instead of final link.
690 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
691 // Also enabled through a config option
692 $usepermalinks = isset ( $_GET [ 'permalinks' ]) || ! $GLOBALS [ 'config' ][ 'ENABLE_RSS_PERMALINKS' ];
695 $query = $_SERVER [ "QUERY_STRING" ];
696 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=rss' ) && ! isLoggedIn ());
697 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
699 // If cached was not found (or not usable), then read the database and build the response:
700 $LINKSDB = new LinkDB (
701 $GLOBALS [ 'config' ][ 'DATASTORE' ],
702 isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ],
703 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ]
705 // Read links from database (and filter private links if user it not logged in).
707 // Optionally filter the results:
708 $linksToDisplay = array ();
709 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
710 else if (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
711 else $linksToDisplay = $LINKSDB ;
713 $nblinksToDisplay = 50 ; // Number of links to display.
714 if (! empty ( $_GET [ 'nb' ])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
716 $nblinksToDisplay = $_GET [ 'nb' ]== 'all' ? count ( $linksToDisplay ) : max ( $_GET [ 'nb' ] +
0 , 1 ) ;
719 $pageaddr = escape ( indexUrl ());
720 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">' ;
721 echo '<channel><title>' . $GLOBALS [ 'title' ]. '</title><link>' . $pageaddr . '</link>' ;
722 echo '<description>Shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n\n " ;
723 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
725 echo '<!-- PubSubHubbub Discovery -->' ;
726 echo '<link rel="hub" href="' . escape ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" xmlns="http://www.w3.org/2005/Atom" />' ;
727 echo '<link rel="self" href="' . $pageaddr . '?do=rss" xmlns="http://www.w3.org/2005/Atom" />' ;
728 echo '<!-- End Of PubSubHubbub Discovery -->' ;
731 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
732 while ( $i < $nblinksToDisplay && $i < count ( $keys ))
734 $link = $linksToDisplay [ $keys [ $i ]];
735 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
736 $rfc822date = linkdate2rfc822 ( $link [ 'linkdate' ]);
737 $absurl = $link [ 'url' ];
738 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
739 if ( $usepermalinks === true )
740 echo '<item><title>' . $link [ 'title' ]. '</title><guid isPermaLink="true">' . $guid . '</guid><link>' . $guid . '</link>' ;
742 echo '<item><title>' . $link [ 'title' ]. '</title><guid isPermaLink="false">' . $guid . '</guid><link>' . $absurl . '</link>' ;
743 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) echo '<pubDate>' . escape ( $rfc822date ). "</pubDate> \n " ;
744 if ( $link [ 'tags' ]!= '' ) // Adding tags to each RSS entry (as mentioned in RSS specification)
746 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag ) { echo '<category domain="' . $pageaddr
. '">' . $tag
. '</category>' . " \n " ; }
749 // Add permalink in description
750 $descriptionlink = '(<a href="' . $guid . '">Permalink</a>)' ;
751 // If user wants permalinks first, put the final link in description
752 if ( $usepermalinks === true ) $descriptionlink = '(<a href="' . $absurl . '">Link</a>)' ;
753 if ( strlen ( $link [ 'description' ])> 0 ) $descriptionlink = '<br>' . $descriptionlink ;
754 echo '<description><![CDATA[' . nl2br ( keepMultipleSpaces ( text2clickable ( $link [ 'description' ]))). $descriptionlink . ']]></description>' . " \n </item> \n " ;
757 echo '</channel></rss><!-- Cached version of ' . escape ( pageUrl ()). ' -->' ;
759 $cache- > cache ( ob_get_contents ());
764 // ------------------------------------------------------------------------------------------
765 // Output the last N links in ATOM format.
768 header ( 'Content-Type: application/atom+xml; charset=utf-8' );
770 // $usepermalink : If true, use permalink instead of final link.
771 // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
772 $usepermalinks = isset ( $_GET [ 'permalinks' ]) || ! $GLOBALS [ 'config' ][ 'ENABLE_RSS_PERMALINKS' ];
775 $query = $_SERVER [ "QUERY_STRING" ];
776 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=atom' ) && ! isLoggedIn ());
777 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
778 // If cached was not found (or not usable), then read the database and build the response:
780 // Read links from database (and filter private links if used it not logged in).
781 $LINKSDB = new LinkDB (
782 $GLOBALS [ 'config' ][ 'DATASTORE' ],
783 isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ],
784 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ]
787 // Optionally filter the results:
788 $linksToDisplay = array ();
789 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
790 else if (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
791 else $linksToDisplay = $LINKSDB ;
793 $nblinksToDisplay = 50 ; // Number of links to display.
794 if (! empty ( $_GET [ 'nb' ])) // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
796 $nblinksToDisplay = $_GET [ 'nb' ]== 'all' ? count ( $linksToDisplay ) : max ( $_GET [ 'nb' ] +
0 , 1 ) ;
799 $pageaddr = escape ( indexUrl ());
803 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
804 while ( $i < $nblinksToDisplay && $i < count ( $keys ))
806 $link = $linksToDisplay [ $keys [ $i ]];
807 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
808 $iso8601date = linkdate2iso8601 ( $link [ 'linkdate' ]);
809 $latestDate = max ( $latestDate , $iso8601date );
810 $absurl = $link [ 'url' ];
811 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
812 $entries .= '<entry><title>' . $link [ 'title' ]. '</title>' ;
813 if ( $usepermalinks === true )
814 $entries .= '<link href="' . $guid . '" /><id>' . $guid . '</id>' ;
816 $entries .= '<link href="' . $absurl . '" /><id>' . $guid . '</id>' ;
817 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $entries .= '<updated>' . escape ( $iso8601date ). '</updated>' ;
819 // Add permalink in description
820 $descriptionlink = '(<a href="' . $guid . '">Permalink</a>)' ;
821 // If user wants permalinks first, put the final link in description
822 if ( $usepermalinks === true ) $descriptionlink = '(<a href="' . $absurl . '">Link</a>)' ;
823 if ( strlen ( $link [ 'description' ])> 0 ) $descriptionlink = '<br>' . $descriptionlink ;
825 $entries .= '<content type="html"><![CDATA[' . nl2br ( keepMultipleSpaces ( text2clickable ( $link [ 'description' ]))). $descriptionlink . "]]></content> \n " ;
826 if ( $link [ 'tags' ]!= '' ) // Adding tags to each ATOM entry (as mentioned in ATOM specification)
828 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
829 { $entries
.= '<category scheme="' . $pageaddr
. '" term="' . $tag
. '" />' . " \n " ; }
831 $entries .= "</entry> \n " ;
834 $feed = '<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">' ;
835 $feed .= '<title>' . $GLOBALS [ 'title' ]. '</title>' ;
836 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $feed .= '<updated>' . escape ( $latestDate ). '</updated>' ;
837 $feed .= '<link rel="self" href="' . escape ( serverUrl (). $_SERVER [ "REQUEST_URI" ]). '" />' ;
838 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
840 $feed .= '<!-- PubSubHubbub Discovery -->' ;
841 $feed .= '<link rel="hub" href="' . escape ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" />' ;
842 $feed .= '<!-- End Of PubSubHubbub Discovery -->' ;
844 $feed .= '<author><name>' . $pageaddr . '</name><uri>' . $pageaddr . '</uri></author>' ;
845 $feed .= '<id>' . $pageaddr . '</id>' . " \n\n " ; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
847 $feed .= '</feed><!-- Cached version of ' . escape ( pageUrl ()). ' -->' ;
850 $cache- > cache ( ob_get_contents ());
855 // ------------------------------------------------------------------------------------------
856 // Daily RSS feed: 1 RSS entry per day giving all the links on that day.
857 // Gives the last 7 days (which have links).
858 // This RSS feed cannot be filtered.
859 function showDailyRSS ()
862 $query = $_SERVER [ "QUERY_STRING" ];
863 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=dailyrss' ) && ! isLoggedIn ());
864 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
865 // If cached was not found (or not usable), then read the database and build the response:
867 // Read links from database (and filter private links if used it not logged in).
868 $LINKSDB = new LinkDB (
869 $GLOBALS [ 'config' ][ 'DATASTORE' ],
870 isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ],
871 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ]
874 /* Some Shaarlies may have very few links, so we need to look
875 back in time (rsort()) until we have enough days ($nb_of_days).
877 $linkdates = array (); foreach ( $LINKSDB as $linkdate => $value ) { $linkdates
[]= $linkdate
; }
879 $nb_of_days = 7 ; // We take 7 days.
882 foreach ( $linkdates as $linkdate )
884 $day = substr ( $linkdate , 0 , 8 ); // Extract day (without time)
885 if ( strcmp ( $day , $today )< 0 )
887 if ( empty ( $days [ $day ])) $days [ $day ]= array ();
888 $days [ $day ][]= $linkdate ;
890 if ( count ( $days )> $nb_of_days ) break ; // Have we collected enough days?
893 // Build the RSS feed.
894 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
895 $pageaddr = escape ( indexUrl ());
896 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">' ;
897 echo '<channel><title>Daily - ' . $GLOBALS [ 'title' ]. '</title><link>' . $pageaddr . '</link>' ;
898 echo '<description>Daily shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n " ;
900 foreach ( $days as $day => $linkdates ) // For each day.
902 $daydate = utf8_encode ( strftime ( '%A %d, %B %Y' , linkdate2timestamp ( $day . '_000000' ))); // Full text date
903 $rfc822date = linkdate2rfc822 ( $day . '_000000' );
904 $absurl = escape ( indexUrl (). '?do=daily&day=' . $day ); // Absolute URL of the corresponding "Daily" page.
905 echo '<item><title>' . $GLOBALS [ 'title' ]. ' - ' . $daydate . '</title><guid>' . $absurl . '</guid><link>' . $absurl . '</link>' ;
906 echo '<pubDate>' . escape ( $rfc822date ). "</pubDate>" ;
908 // Build the HTML body of this RSS entry.
912 // We pre-format some fields for proper output.
913 foreach ( $linkdates as $linkdate )
915 $l = $LINKSDB [ $linkdate ];
916 $l [ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( $l [ 'description' ])));
917 $l [ 'thumbnail' ] = thumbnail ( $l [ 'url' ]);
918 $l [ 'timestamp' ] = linkdate2timestamp ( $l [ 'linkdate' ]);
919 if ( startsWith ( $l [ 'url' ], '?' )) $l [ 'url' ]= indexUrl (). $l [ 'url' ]; // make permalink URL absolute
920 $links [ $linkdate ]= $l ;
922 // Then build the HTML for this day:
924 $tpl- > assign ( 'links' , $links );
925 $html = $tpl- > draw ( 'dailyrss' , $return_string = true );
927 echo '<description><![CDATA[' . $html . ']]></description>' . " \n </item> \n\n " ;
930 echo '</channel></rss><!-- Cached version of ' . escape ( pageUrl ()). ' -->' ;
932 $cache- > cache ( ob_get_contents ());
940 $LINKSDB = new LinkDB (
941 $GLOBALS [ 'config' ][ 'DATASTORE' ],
942 isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ],
943 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ]
946 $day = Date ( 'Ymd' , strtotime ( '-1 day' )); // Yesterday, in format YYYYMMDD.
947 if ( isset ( $_GET [ 'day' ])) $day = $_GET [ 'day' ];
949 $days = $LINKSDB- > days ();
950 $i = array_search ( $day , $days );
951 if ( $i === false ) { $i
= count ( $days
)- 1 ; $day
= $days
[ $i
]; }
956 if ( $i >= 1 ) $previousday = $days [ $i-1 ];
957 if ( $i < count ( $days )- 1 ) $nextday = $days [ $i +
1 ];
961 $linksToDisplay = $LINKSDB- > filterDay ( $day );
962 } catch ( Exception
$exc ) {
964 $linksToDisplay = [];
967 // We pre-format some fields for proper output.
968 foreach ( $linksToDisplay as $key => $link )
971 $taglist = explode ( ' ' , $link [ 'tags' ]);
972 uasort ( $taglist , 'strcasecmp' );
973 $linksToDisplay [ $key ][ 'taglist' ]= $taglist ;
974 $linksToDisplay [ $key ][ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( $link [ 'description' ])));
975 $linksToDisplay [ $key ][ 'thumbnail' ] = thumbnail ( $link [ 'url' ]);
976 $linksToDisplay [ $key ][ 'timestamp' ] = linkdate2timestamp ( $link [ 'linkdate' ]);
979 /* We need to spread the articles on 3 columns.
980 I did not want to use a JavaScript lib like http://masonry.desandro.com/
981 so I manually spread entries with a simple method: I roughly evaluate the
982 height of a div according to title and description length.
984 $columns = array ( array (), array (), array ()); // Entries to display, for each column.
985 $fill = array ( 0 , 0 , 0 ); // Rough estimate of columns fill.
986 foreach ( $linksToDisplay as $key => $link )
988 // Roughly estimate length of entry (by counting characters)
989 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
990 // Description: 836 characters gives roughly 342 pixel height.
991 // This is not perfect, but it's usually OK.
992 $length = strlen ( $link [ 'title' ]) +
( 342 * strlen ( $link [ 'description' ]))/ 836 ;
993 if ( $link [ 'thumbnail' ]) $length +
= 100 ; // 1 thumbnails roughly takes 100 pixels height.
994 // Then put in column which is the less filled:
995 $smallest = min ( $fill ); // find smallest value in array.
996 $index = array_search ( $smallest , $fill ); // find index of this smallest value.
997 array_push ( $columns [ $index ], $link ); // Put entry in this column.
998 $fill [ $index ] +
= $length ;
1000 $PAGE = new pageBuilder
;
1001 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1002 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1003 $PAGE- > assign ( 'cols' , $columns );
1004 $PAGE- > assign ( 'day' , linkdate2timestamp ( $day . '_000000' ));
1005 $PAGE- > assign ( 'previousday' , $previousday );
1006 $PAGE- > assign ( 'nextday' , $nextday );
1007 $PAGE- > renderPage ( 'daily' );
1012 // ------------------------------------------------------------------------------------------
1013 // Render HTML page (according to URL parameters and user rights)
1014 function renderPage ()
1016 $LINKSDB = new LinkDB (
1017 $GLOBALS [ 'config' ][ 'DATASTORE' ],
1018 isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ],
1019 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ]
1022 // -------- Display login form.
1023 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=login' ))
1025 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) { header ( 'Location: ?' ); exit ; } // No need to login for open Shaarli
1026 $token = '' ; if ( ban_canLogin ()) $token = getToken (); // Do not waste token generation if not useful.
1027 $PAGE = new pageBuilder
;
1028 $PAGE- > assign ( 'token' , $token );
1029 $PAGE- > assign ( 'returnurl' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? escape ( $_SERVER [ 'HTTP_REFERER' ]): '' ));
1030 $PAGE- > renderPage ( 'loginform' );
1033 // -------- User wants to logout.
1034 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=logout' ))
1038 header ( 'Location: ?' );
1042 // -------- Picture wall
1043 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=picwall' ))
1045 // Optionally filter the results:
1047 if (! empty ( $_GET [ 'searchterm' ])) $links = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
1048 elseif (! empty ( $_GET [ 'searchtags' ])) $links = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1049 else $links = $LINKSDB ;
1052 $linksToDisplay = array ();
1054 // Get only links which have a thumbnail.
1055 foreach ( $links as $link )
1057 $permalink = '?' . escape ( smallhash ( $link [ 'linkdate' ]));
1058 $thumb = lazyThumbnail ( $link [ 'url' ], $permalink );
1059 if ( $thumb != '' ) // Only output links which have a thumbnail.
1061 $link [ 'thumbnail' ]= $thumb ; // Thumbnail HTML code.
1062 $linksToDisplay []= $link ; // Add to array.
1066 $PAGE = new pageBuilder
;
1067 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1068 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1069 $PAGE- > renderPage ( 'picwall' );
1073 // -------- Tag cloud
1074 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tagcloud' ))
1076 $tags = $LINKSDB- > allTags ();
1078 // We sort tags alphabetically, then choose a font size according to count.
1079 // First, find max value.
1080 $maxcount = 0 ; foreach ( $tags as $key => $value ) $maxcount = max ( $maxcount , $value );
1083 foreach ( $tags as $key => $value )
1084 // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
1086 $tagList [ $key ] = array ( 'count' => $value , 'size' => log ( $value , 15 ) / log ( $maxcount , 30 ) * ( 22 - 6 ) +
6 );
1088 $PAGE = new pageBuilder
;
1089 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1090 $PAGE- > assign ( 'tags' , $tagList );
1091 $PAGE- > renderPage ( 'tagcloud' );
1095 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1096 if ( isset ( $_GET [ 'addtag' ]))
1098 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1099 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?searchtags=' . urlencode ( $_GET
[ 'addtag' ])); exit ; } // In case browser does not send HTTP_REFERER
1100 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1102 // Check if this tag is already in the search query and ignore it if it is.
1103 // Each tag is always separated by a space
1104 $current_tags = explode ( ' ' , $params [ 'searchtags' ]);
1106 foreach ( $current_tags as $value ) {
1107 if ( $value === $_GET [ 'addtag' ]) {
1112 // Append the tag if necessary
1113 if ( empty ( $params [ 'searchtags' ])) {
1114 $params [ 'searchtags' ] = trim ( $_GET [ 'addtag' ]);
1117 $params [ 'searchtags' ] = trim ( $params [ 'searchtags' ]). ' ' . trim ( $_GET [ 'addtag' ]);
1120 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1121 header ( 'Location: ?' . http_build_query ( $params ));
1125 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1126 if ( isset ( $_GET [ 'removetag' ]))
1128 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1129 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?' ); exit ; } // In case browser does not send HTTP_REFERER
1130 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1131 if ( isset ( $params [ 'searchtags' ]))
1133 $tags = explode ( ' ' , $params [ 'searchtags' ]);
1134 $tags = array_diff ( $tags , array ( $_GET [ 'removetag' ])); // Remove value from array $tags.
1135 if ( count ( $tags )== 0 ) unset ( $params [ 'searchtags' ]); else $params [ 'searchtags' ] = implode ( ' ' , $tags );
1136 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1138 header ( 'Location: ?' . http_build_query ( $params ));
1142 // -------- User wants to change the number of links per page (linksperpage=...)
1143 if ( isset ( $_GET [ 'linksperpage' ]))
1145 if ( is_numeric ( $_GET [ 'linksperpage' ])) { $_SESSION
[ 'LINKS_PER_PAGE' ]= abs ( intval ( $_GET
[ 'linksperpage' ])); }
1146 // Make sure the referrer is Shaarli itself.
1148 if (! empty ( $_SERVER [ 'HTTP_REFERER' ]) && strcmp ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_HOST
), $_SERVER [ 'HTTP_HOST' ])== 0 )
1149 $referer = $_SERVER [ 'HTTP_REFERER' ];
1150 header ( 'Location: ' . $referer );
1154 // -------- User wants to see only private links (toggle)
1155 if ( isset ( $_GET [ 'privateonly' ]))
1157 if ( empty ( $_SESSION [ 'privateonly' ]))
1159 $_SESSION [ 'privateonly' ]= 1 ; // See only private links
1163 unset ( $_SESSION [ 'privateonly' ]); // See all links
1165 // Make sure the referrer is Shaarli itself.
1167 if (! empty ( $_SERVER [ 'HTTP_REFERER' ]) && strcmp ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_HOST
), $_SERVER [ 'HTTP_HOST' ])== 0 )
1168 $referer = $_SERVER [ 'HTTP_REFERER' ];
1169 header ( 'Location: ' . $referer );
1173 // -------- Handle other actions allowed for non-logged in users:
1176 // User tries to post new link but is not logged in:
1177 // Show login screen, then redirect to ?post=...
1178 if ( isset ( $_GET [ 'post' ]))
1180 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.
1184 // Same case as above except that user tried to access ?do=addlink without being logged in
1185 // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
1186 if ( isset ( $_GET [ 'do' ]) && $_GET [ 'do' ] === 'addlink' ) {
1187 header ( 'Location: ?do=login&post=' );
1191 $PAGE = new pageBuilder
;
1192 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1193 $PAGE- > renderPage ( 'linklist' );
1194 exit ; // Never remove this one! All operations below are reserved for logged in user.
1197 // -------- All other functions are reserved for the registered user:
1199 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1200 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tools' ))
1202 $PAGE = new pageBuilder
;
1203 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1204 $PAGE- > assign ( 'pageabsaddr' , indexUrl ());
1205 $PAGE- > renderPage ( 'tools' );
1209 // -------- User wants to change his/her password.
1210 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changepasswd' ))
1212 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) die ( 'You are not supposed to change a password on an Open Shaarli.' );
1213 if (! empty ( $_POST [ 'setpassword' ]) && ! empty ( $_POST [ 'oldpassword' ]))
1215 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away!
1217 // Make sure old password is correct.
1218 $oldhash = sha1 ( $_POST [ 'oldpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1219 if ( $oldhash != $GLOBALS [ 'hash' ]) { echo '<script>alert("The old password is not correct.");document.location= \' ?do=changepasswd \' ;</script>' ; exit ; }
1220 // Save new password
1221 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
1222 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1224 echo '<script>alert("Your password has been changed.");document.location= \' ?do=tools \' ;</script>' ;
1227 else // show the change password form.
1229 $PAGE = new pageBuilder
;
1230 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1231 $PAGE- > assign ( 'token' , getToken ());
1232 $PAGE- > renderPage ( 'changepassword' );
1237 // -------- User wants to change configuration
1238 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=configure' ))
1240 if (! empty ( $_POST [ 'title' ]) )
1242 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away!
1244 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
1245 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
1246 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
1247 $GLOBALS [ 'timezone' ] = $tz ;
1248 $GLOBALS [ 'title' ]= $_POST [ 'title' ];
1249 $GLOBALS [ 'titleLink' ]= $_POST [ 'titleLink' ];
1250 $GLOBALS [ 'redirector' ]= $_POST [ 'redirector' ];
1251 $GLOBALS [ 'disablesessionprotection' ]=! empty ( $_POST [ 'disablesessionprotection' ]);
1252 $GLOBALS [ 'disablejquery' ]=! empty ( $_POST [ 'disablejquery' ]);
1253 $GLOBALS [ 'privateLinkByDefault' ]=! empty ( $_POST [ 'privateLinkByDefault' ]);
1254 $GLOBALS [ 'config' ][ 'ENABLE_RSS_PERMALINKS' ]= ! empty ( $_POST [ 'enableRssPermalinks' ]);
1255 $GLOBALS [ 'config' ][ 'ENABLE_UPDATECHECK' ] = ! empty ( $_POST [ 'updateCheck' ]);
1256 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ] = ! empty ( $_POST [ 'hidePublicLinks' ]);
1258 echo '<script>alert("Configuration was saved.");document.location= \' ?do=tools \' ;</script>' ;
1261 else // Show the configuration form.
1263 $PAGE = new pageBuilder
;
1264 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1265 $PAGE- > assign ( 'token' , getToken ());
1266 $PAGE- > assign ( 'title' , empty ( $GLOBALS [ 'title' ]) ? '' : $GLOBALS [ 'title' ] );
1267 $PAGE- > assign ( 'redirector' , empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ] );
1268 list ( $timezone_form , $timezone_js ) = templateTZform ( $GLOBALS [ 'timezone' ]);
1269 $PAGE- > assign ( 'timezone_form' , $timezone_form ); // FIXME: Put entire tz form generation in template?
1270 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1271 $PAGE- > renderPage ( 'configure' );
1276 // -------- User wants to rename a tag or delete it
1277 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changetag' ))
1279 if ( empty ( $_POST [ 'fromtag' ]))
1281 $PAGE = new pageBuilder
;
1282 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1283 $PAGE- > assign ( 'token' , getToken ());
1284 $PAGE- > assign ( 'tags' , $LINKSDB- > allTags ());
1285 $PAGE- > renderPage ( 'changetag' );
1288 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1291 if (! empty ( $_POST [ 'deletetag' ]) && ! empty ( $_POST [ 'fromtag' ]))
1293 $needle = trim ( $_POST [ 'fromtag' ]);
1294 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // True for case-sensitive tag search.
1295 foreach ( $linksToAlter as $key => $value )
1297 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1298 unset ( $tags [ array_search ( $needle , $tags )]); // Remove tag.
1299 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1300 $LINKSDB [ $key ]= $value ;
1302 $LINKSDB- > savedb (); // Save to disk.
1303 echo '<script>alert("Tag was removed from ' . count ( $linksToAlter ). ' links.");document.location= \' ? \' ;</script>' ;
1308 if (! empty ( $_POST [ 'renametag' ]) && ! empty ( $_POST [ 'fromtag' ]) && ! empty ( $_POST [ 'totag' ]))
1310 $needle = trim ( $_POST [ 'fromtag' ]);
1311 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1312 foreach ( $linksToAlter as $key => $value )
1314 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1315 $tags [ array_search ( $needle , $tags )] = trim ( $_POST [ 'totag' ]); // Replace tags value.
1316 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1317 $LINKSDB [ $key ]= $value ;
1319 $LINKSDB- > savedb (); // Save to disk.
1320 echo '<script>alert("Tag was renamed in ' . count ( $linksToAlter ). ' links.");document.location= \' ?searchtags=' . urlencode ( $_POST [ 'totag' ]). ' \' ;</script>' ;
1325 // -------- User wants to add a link without using the bookmarklet: Show form.
1326 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=addlink' ))
1328 $PAGE = new pageBuilder
;
1329 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1330 $PAGE- > renderPage ( 'addlink' );
1334 // -------- User clicked the "Save" button when editing a link: Save link to database.
1335 if ( isset ( $_POST [ 'save_edit' ]))
1337 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away!
1338 $tags = trim ( preg_replace ( '/\s\s+/' , ' ' , $_POST [ 'lf_tags' ])); // Remove multiple spaces.
1339 $linkdate = $_POST [ 'lf_linkdate' ];
1340 $url = trim ( $_POST [ 'lf_url' ]);
1341 if (! startsWith ( $url , 'http:' ) && ! startsWith ( $url , 'https:' ) && ! startsWith ( $url , 'ftp:' ) && ! startsWith ( $url , 'magnet:' ) && ! startsWith ( $url , '?' ) && ! startsWith ( $url , 'javascript:' ))
1342 $url = 'http://' . $url ;
1343 $link = array ( 'title' => trim ( $_POST [ 'lf_title' ]), 'url' => $url , 'description' => trim ( $_POST [ 'lf_description' ]), 'private' =>( isset ( $_POST [ 'lf_private' ]) ? 1 : 0 ),
1344 'linkdate' => $linkdate , 'tags' => str_replace ( ',' , ' ' , $tags ));
1345 if ( $link [ 'title' ]== '' ) $link [ 'title' ]= $link [ 'url' ]; // If title is empty, use the URL as title.
1346 $LINKSDB [ $linkdate ] = $link ;
1347 $LINKSDB- > savedb (); // Save to disk.
1350 // If we are called from the bookmarklet, we must close the popup:
1351 if ( isset ( $_GET [ 'source' ]) && ( $_GET [ 'source' ]== 'bookmarklet' || $_GET [ 'source' ]== 'firefoxsocialapi' )) { echo '<script>self.close();</script>' ; exit ; }
1352 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1353 $returnurl .= '#' . smallHash ( $linkdate ); // Scroll to the link which has been edited.
1354 if ( strstr ( $returnurl , "do=addlink" )) { $returnurl
= '?' ; } //if we come from ?do=addlink, set returnurl to homepage instead
1355 header ( 'Location: ' . $returnurl ); // After saving the link, redirect to the page the user was on.
1359 // -------- User clicked the "Cancel" button when editing a link.
1360 if ( isset ( $_POST [ 'cancel_edit' ]))
1362 // If we are called from the bookmarklet, we must close the popup:
1363 if ( isset ( $_GET [ 'source' ]) && ( $_GET [ 'source' ]== 'bookmarklet' || $_GET [ 'source' ]== 'firefoxsocialapi' )) { echo '<script>self.close();</script>' ; exit ; }
1364 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1365 $returnurl .= '#' . smallHash ( $_POST [ 'lf_linkdate' ]); // Scroll to the link which has been edited.
1366 header ( 'Location: ' . $returnurl ); // After canceling, redirect to the page the user was on.
1370 // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1371 if ( isset ( $_POST [ 'delete_link' ]))
1373 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1374 // We do not need to ask for confirmation:
1375 // - confirmation is handled by JavaScript
1376 // - we are protected from XSRF by the token.
1377 $linkdate = $_POST [ 'lf_linkdate' ];
1378 unset ( $LINKSDB [ $linkdate ]);
1379 $LINKSDB- > savedb (); // save to disk
1381 // If we are called from the bookmarklet, we must close the popup:
1382 if ( isset ( $_GET [ 'source' ]) && ( $_GET [ 'source' ]== 'bookmarklet' || $_GET [ 'source' ]== 'firefoxsocialapi' )) { echo '<script>self.close();</script>' ; exit ; }
1383 // Pick where we're going to redirect
1384 // =============================================================
1385 // Basically, we can't redirect to where we were previously if it was a permalink
1386 // or an edit_link, because it would 404.
1388 // - / : nothing in $_GET, redirect to self
1389 // - /?page : redirect to self
1390 // - /?searchterm : redirect to self (there might be other links)
1391 // - /?searchtags : redirect to self
1392 // - /permalink : redirect to / (the link does not exist anymore)
1393 // - /?edit_link : redirect to / (the link does not exist anymore)
1394 // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
1395 // redirect is not satisfied, and only then redirect to /
1398 if ( count ( $_GET ) == 0 ||
1399 isset ( $_GET [ 'page' ]) ||
1400 isset ( $_GET [ 'searchterm' ]) ||
1401 isset ( $_GET [ 'searchtags' ])) {
1403 if ( isset ( $_POST [ 'returnurl' ])) {
1404 $location = $_POST [ 'returnurl' ]; // Handle redirects given by the form
1407 if ( $location === "?" &&
1408 isset ( $_SERVER [ 'HTTP_REFERER' ])) { // Handle HTTP_REFERER in case we're not coming from the same place.
1409 $location = $_SERVER [ 'HTTP_REFERER' ];
1413 header ( 'Location: ' . $location ); // After deleting the link, redirect to appropriate location
1417 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1418 if ( isset ( $_GET [ 'edit_link' ]))
1420 $link = $LINKSDB [ $_GET [ 'edit_link' ]]; // Read database
1421 if (! $link ) { header ( 'Location: ?' ); exit ; } // Link not found in database.
1422 $PAGE = new pageBuilder
;
1423 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1424 $PAGE- > assign ( 'link' , $link );
1425 $PAGE- > assign ( 'link_is_new' , false );
1426 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1427 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? escape ( $_SERVER [ 'HTTP_REFERER' ]) : '' ));
1428 $PAGE- > assign ( 'tags' , $LINKSDB- > allTags ());
1429 $PAGE- > renderPage ( 'editlink' );
1433 // -------- User want to post a new link: Display link edit form.
1434 if ( isset ( $_GET [ 'post' ]))
1439 // We remove the annoying parameters added by FeedBurner, GoogleFeedProxy, Facebook...
1440 $annoyingpatterns = array ( '/[ \? &]utm_source=[^&]*/' ,
1441 '/[ \? &]utm_campaign=[^&]*/' ,
1442 '/[ \? &]utm_medium=[^&]*/' ,
1443 '/#xtor=RSS-[^&]*/' ,
1445 '/[ \? &]__scoop[^&]*/' ,
1447 '/[ \? &]action_ref_map=[^&]*/' ,
1448 '/[ \? &]action_type_map=[^&]*/' ,
1449 '/[ \? &]action_object_map=[^&]*/' ,
1450 '/[ \? &]utm_content=[^&]*/' ,
1454 foreach ( $annoyingpatterns as $pattern )
1456 $url = preg_replace ( $pattern , "" , $url );
1459 $link_is_new = false ;
1460 $link = $LINKSDB- > getLinkFromUrl ( $url ); // Check if URL is not already in database (in this case, we will edit the existing link)
1463 $link_is_new = true ; // This is a new link
1464 $linkdate = strval ( date ( 'Ymd_His' ));
1465 $title = ( empty ( $_GET [ 'title' ]) ? '' : $_GET [ 'title' ] ); // Get title if it was provided in URL (by the bookmarklet).
1466 $description = ( empty ( $_GET [ 'description' ]) ? '' : $_GET [ 'description' ]); // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1467 $tags = ( empty ( $_GET [ 'tags' ]) ? '' : $_GET [ 'tags' ] ); // Get tags if it was provided in URL
1468 $private = (! empty ( $_GET [ 'private' ]) && $_GET [ 'private' ] === "1" ? 1 : 0 ); // Get private if it was provided in URL
1469 if (( $url != '' ) && parse_url ( $url , PHP_URL_SCHEME
)== '' ) $url = 'http://' . $url ;
1470 // 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.)
1471 if ( empty ( $title ) && parse_url ( $url , PHP_URL_SCHEME
)== 'http' )
1473 list ( $status , $headers , $data ) = getHTTP ( $url , 4 ); // Short timeout to keep the application responsive.
1474 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
1475 if ( strpos ( $status , '200 OK' )!== false )
1477 // Look for charset in html header.
1478 preg_match ( '#<meta .*charset=.*>#Usi' , $data , $meta );
1480 // If found, extract encoding.
1481 if (! empty ( $meta [ 0 ]))
1483 // Get encoding specified in header.
1484 preg_match ( '#charset="?(.*)"#si' , $meta [ 0 ], $enc );
1485 // If charset not found, use utf-8.
1486 $html_charset = (! empty ( $enc [ 1 ])) ? strtolower ( $enc [ 1 ]) : 'utf-8' ;
1488 else { $html_charset
= 'utf-8' ; }
1491 $title = html_extract_title ( $data );
1494 // Re-encode title in utf-8 if necessary.
1495 $title = ( $html_charset == 'iso-8859-1' ) ? utf8_encode ( $title ) : $title ;
1499 if ( $url == '' ) // In case of empty URL, this is just a text (with a link that points to itself)
1501 $url = '?' . smallHash ( $linkdate );
1504 $link = array ( 'linkdate' => $linkdate , 'title' => $title , 'url' => $url , 'description' => $description , 'tags' => $tags , 'private' => $private );
1507 $PAGE = new pageBuilder
;
1508 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1509 $PAGE- > assign ( 'link' , $link );
1510 $PAGE- > assign ( 'link_is_new' , $link_is_new );
1511 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1512 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1513 $PAGE- > assign ( 'source' ,( isset ( $_GET [ 'source' ]) ? $_GET [ 'source' ] : '' ));
1514 $PAGE- > assign ( 'tags' , $LINKSDB- > allTags ());
1515 $PAGE- > renderPage ( 'editlink' );
1519 // -------- Export as Netscape Bookmarks HTML file.
1520 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=export' ))
1522 if ( empty ( $_GET [ 'what' ]))
1524 $PAGE = new pageBuilder
;
1525 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1526 $PAGE- > renderPage ( 'export' );
1529 $exportWhat = $_GET [ 'what' ];
1530 if (! array_intersect ( array ( 'all' , 'public' , 'private' ), array ( $exportWhat ))) die ( 'What are you trying to export???' );
1532 header ( 'Content-Type: text/html; charset=utf-8' );
1533 header ( 'Content-disposition: attachment; filename=bookmarks_' . $exportWhat . '_' . strval ( date ( 'Ymd_His' )). '.html' );
1534 $currentdate = date ( 'Y/m/d H:i:s' );
1536 <!DOCTYPE NETSCAPE-Bookmark-file-1>
1537 <!-- This is an automatically generated file.
1538 It will be read and overwritten.
1540 <!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1541 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1542 <TITLE>Bookmarks</TITLE>
1545 foreach ( $LINKSDB as $link )
1547 if ( $exportWhat == 'all' ||
1548 ( $exportWhat == 'private' && $link [ 'private' ]!= 0 ) ||
1549 ( $exportWhat == 'public' && $link [ 'private' ]== 0 ))
1551 echo '<DT><A HREF="' . $link [ 'url' ]. '" ADD_DATE="' . linkdate2timestamp ( $link [ 'linkdate' ]). '" PRIVATE="' . $link [ 'private' ]. '"' ;
1552 if ( $link [ 'tags' ]!= '' ) echo ' TAGS="' . str_replace ( ' ' , ',' , $link [ 'tags' ]). '"' ;
1553 echo '>' . $link [ 'title' ]. "</A> \n " ;
1554 if ( $link [ 'description' ]!= '' ) echo '<DD>' . $link [ 'description' ]. " \n " ;
1560 // -------- User is uploading a file for import
1561 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=upload' ))
1563 // If file is too big, some form field may be missing.
1564 if (! isset ( $_POST [ 'token' ]) || (! isset ( $_FILES )) || ( isset ( $_FILES [ 'filetoupload' ][ 'size' ]) && $_FILES [ 'filetoupload' ][ 'size' ]== 0 ))
1566 $returnurl = ( empty ( $_SERVER [ 'HTTP_REFERER' ]) ? '?' : $_SERVER [ 'HTTP_REFERER' ] );
1567 echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept (' . getMaxFileSize (). ' bytes). Please upload in smaller chunks.");document.location= \' ' . escape ( $returnurl ). ' \' ;</script>' ;
1570 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1575 // -------- Show upload/import dialog:
1576 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=import' ))
1578 $PAGE = new pageBuilder
;
1579 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1580 $PAGE- > assign ( 'token' , getToken ());
1581 $PAGE- > assign ( 'maxfilesize' , getMaxFileSize ());
1582 $PAGE- > renderPage ( 'import' );
1586 // -------- Otherwise, simply display search form and links:
1587 $PAGE = new pageBuilder
;
1588 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1589 $PAGE- > renderPage ( 'linklist' );
1593 // -----------------------------------------------------------------------------------------------
1594 // Process the import file form.
1595 function importFile ()
1597 if (!( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ])) { die ( 'Not allowed.' ); }
1598 $LINKSDB = new LinkDB (
1599 $GLOBALS [ 'config' ][ 'DATASTORE' ],
1600 isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ],
1601 $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ]
1603 $filename = $_FILES [ 'filetoupload' ][ 'name' ];
1604 $filesize = $_FILES [ 'filetoupload' ][ 'size' ];
1605 $data = file_get_contents ( $_FILES [ 'filetoupload' ][ 'tmp_name' ]);
1606 $private = ( empty ( $_POST [ 'private' ]) ? 0 : 1 ); // Should the links be imported as private?
1607 $overwrite = ! empty ( $_POST [ 'overwrite' ]) ; // Should the imported links overwrite existing ones?
1612 if ( startsWith ( $data , '<!DOCTYPE NETSCAPE-Bookmark-file-1>' )) $type = 'netscape' ; // Netscape bookmark file (aka Firefox).
1614 // Then import the bookmarks.
1615 if ( $type == 'netscape' )
1617 // This is a standard Netscape-style bookmark file.
1618 // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
1619 foreach ( explode ( '<DT>' , $data ) as $html ) // explode is very fast
1621 $link = array ( 'linkdate' => '' , 'title' => '' , 'url' => '' , 'description' => '' , 'tags' => '' , 'private' => 0 );
1622 $d = explode ( '<DD>' , $html );
1623 if ( startswith ( $d [ 0 ], '<A ' ))
1625 $link [ 'description' ] = ( isset ( $d [ 1 ]) ? html_entity_decode ( trim ( $d [ 1 ]), ENT_QUOTES
, 'UTF-8' ) : '' ); // Get description (optional)
1626 preg_match ( '!<A .*?>(.*?)</A>!i' , $d [ 0 ], $matches ); $link [ 'title' ] = ( isset ( $matches [ 1 ]) ? trim ( $matches [ 1 ]) : '' ); // Get title
1627 $link [ 'title' ] = html_entity_decode ( $link [ 'title' ], ENT_QUOTES
, 'UTF-8' );
1628 preg_match_all ( '! ([A-Z_]+)= \" (.*?)"!i' , $html , $matches , PREG_SET_ORDER
); // Get all other attributes
1630 foreach ( $matches as $m )
1632 $attr = $m [ 1 ]; $value = $m [ 2 ];
1633 if ( $attr == 'HREF' ) $link [ 'url' ]= html_entity_decode ( $value , ENT_QUOTES
, 'UTF-8' );
1634 elseif ( $attr == 'ADD_DATE' )
1636 $raw_add_date = intval ( $value );
1637 if ( $raw_add_date > 30000000000 ) $raw_add_date /= 1000 ; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
1639 elseif ( $attr == 'PRIVATE' ) $link [ 'private' ]=( $value == '0' ? 0 : 1 );
1640 elseif ( $attr == 'TAGS' ) $link [ 'tags' ]= html_entity_decode ( str_replace ( ',' , ' ' , $value ), ENT_QUOTES
, 'UTF-8' );
1642 if ( $link [ 'url' ]!= '' )
1644 if ( $private == 1 ) $link [ 'private' ]= 1 ;
1645 $dblink = $LINKSDB- > getLinkFromUrl ( $link [ 'url' ]); // See if the link is already in database.
1647 { // Link not in database, let's import it...
1648 if ( empty ( $raw_add_date )) $raw_add_date = time (); // In case of shitty bookmark file with no ADD_DATE
1650 // Make sure date/time is not already used by another link.
1651 // (Some bookmark files have several different links with the same ADD_DATE)
1652 // We increment date by 1 second until we find a date which is not used in DB.
1653 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1654 while (! empty ( $LINKSDB [ date ( 'Ymd_His' , $raw_add_date )])) { $raw_add_date++
; } // Yes, I know it's ugly.
1655 $link [ 'linkdate' ]= date ( 'Ymd_His' , $raw_add_date );
1656 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1659 else // Link already present in database.
1662 { // If overwrite is required, we import link data, except date/time.
1663 $link [ 'linkdate' ]= $dblink [ 'linkdate' ];
1664 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1674 echo '<script>alert("File ' . json_encode ( $filename ). ' (' . $filesize . ' bytes) was successfully processed: ' . $import_count . ' links imported.");document.location= \' ? \' ;</script>' ;
1678 echo '<script>alert("File ' . json_encode ( $filename ). ' (' . $filesize . ' bytes) has an unknown file format. Nothing was imported.");document.location= \' ? \' ;</script>' ;
1682 // -----------------------------------------------------------------------------------------------
1683 // Template for the list of links (<div id="linklist">)
1684 // This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1685 function buildLinkList ( $PAGE , $LINKSDB )
1687 // ---- Filter link database according to parameters
1688 $linksToDisplay = array ();
1691 if ( isset ( $_GET [ 'searchterm' ])) // Fulltext search
1693 $linksToDisplay = $LINKSDB- > filterFulltext ( trim ( $_GET [ 'searchterm' ]));
1694 $search_crits = escape ( trim ( $_GET [ 'searchterm' ]));
1695 $search_type = 'fulltext' ;
1697 elseif ( isset ( $_GET [ 'searchtags' ])) // Search by tag
1699 $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1700 $search_crits = explode ( ' ' , escape ( trim ( $_GET [ 'searchtags' ])));
1701 $search_type = 'tags' ;
1703 elseif ( isset ( $_SERVER [ 'QUERY_STRING' ]) && preg_match ( '/[a-zA-Z0-9-_@] {6} (&.+?)?/' , $_SERVER [ 'QUERY_STRING' ])) // Detect smallHashes in URL
1705 $linksToDisplay = $LINKSDB- > filterSmallHash ( substr ( trim ( $_SERVER [ "QUERY_STRING" ], '/' ), 0 , 6 ));
1706 if ( count ( $linksToDisplay )== 0 )
1708 header ( $_SERVER [ "SERVER_PROTOCOL" ]. " 404 Not Found" );
1709 echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.' ;
1710 echo '<br>You would mind <a href="?">clicking here</a>?' ;
1713 $search_type = 'permalink' ;
1716 $linksToDisplay = $LINKSDB ; // Otherwise, display without filtering.
1719 // Option: Show only private links
1720 if (! empty ( $_SESSION [ 'privateonly' ]))
1723 foreach ( $linksToDisplay as $linkdate => $link )
1725 if ( $link [ 'private' ]!= 0 ) $tmp [ $linkdate ]= $link ;
1727 $linksToDisplay = $tmp ;
1730 // ---- Handle paging.
1731 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess???
1732 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1733 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1735 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // Stupid and ugly. Thanks PHP.
1737 // If there is only a single link, we change on-the-fly the title of the page.
1738 if ( count ( $linksToDisplay )== 1 ) $GLOBALS [ 'pagetitle' ] = $linksToDisplay [ $keys [ 0 ]][ 'title' ]. ' - ' . $GLOBALS [ 'title' ];
1740 // Select articles according to paging.
1741 $pagecount = ceil ( count ( $keys )/ $_SESSION [ 'LINKS_PER_PAGE' ]);
1742 $pagecount = ( $pagecount == 0 ? 1 : $pagecount );
1743 $page =( empty ( $_GET [ 'page' ]) ? 1 : intval ( $_GET [ 'page' ]));
1744 $page = ( $page < 1 ? 1 : $page );
1745 $page = ( $page > $pagecount ? $pagecount : $page );
1746 $i = ( $page-1 )* $_SESSION [ 'LINKS_PER_PAGE' ]; // Start index.
1747 $end = $i +
$_SESSION [ 'LINKS_PER_PAGE' ];
1748 $linkDisp = array (); // Links to display
1749 while ( $i < $end && $i < count ( $keys ))
1751 $link = $linksToDisplay [ $keys [ $i ]];
1752 $link [ 'description' ]= nl2br ( keepMultipleSpaces ( text2clickable ( $link [ 'description' ])));
1753 $title = $link [ 'title' ];
1754 $classLi = $i %
2 != 0 ? '' : 'publicLinkHightLight' ;
1755 $link [ 'class' ] = ( $link [ 'private' ]== 0 ? $classLi : 'private' );
1756 $link [ 'timestamp' ]= linkdate2timestamp ( $link [ 'linkdate' ]);
1757 $taglist = explode ( ' ' , $link [ 'tags' ]);
1758 uasort ( $taglist , 'strcasecmp' );
1759 $link [ 'taglist' ]= $taglist ;
1761 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.
1762 strlen ( $link [ "url" ]) === 7 ) {
1763 $link [ "url" ] = indexUrl () . $link [ "url" ];
1766 $linkDisp [ $keys [ $i ]] = $link ;
1770 // Compute paging navigation
1771 $searchterm = ( empty ( $_GET [ 'searchterm' ]) ? '' : '&searchterm=' . $_GET [ 'searchterm' ] );
1772 $searchtags = ( empty ( $_GET [ 'searchtags' ]) ? '' : '&searchtags=' . $_GET [ 'searchtags' ] );
1774 $previous_page_url = '' ; if ( $i != count ( $keys )) $previous_page_url = '?page=' .( $page +
1 ). $searchterm . $searchtags ;
1775 $next_page_url = '' ; if ( $page > 1 ) $next_page_url = '?page=' .( $page-1 ). $searchterm . $searchtags ;
1777 $token = '' ; if ( isLoggedIn ()) $token = getToken ();
1779 // Fill all template fields.
1780 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1781 $PAGE- > assign ( 'previous_page_url' , $previous_page_url );
1782 $PAGE- > assign ( 'next_page_url' , $next_page_url );
1783 $PAGE- > assign ( 'page_current' , $page );
1784 $PAGE- > assign ( 'page_max' , $pagecount );
1785 $PAGE- > assign ( 'result_count' , count ( $linksToDisplay ));
1786 $PAGE- > assign ( 'search_type' , $search_type );
1787 $PAGE- > assign ( 'search_crits' , $search_crits );
1788 $PAGE- > assign ( 'redirector' , empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ]); // Optional redirector URL.
1789 $PAGE- > assign ( 'token' , $token );
1790 $PAGE- > assign ( 'links' , $linkDisp );
1791 $PAGE- > assign ( 'tags' , $LINKSDB- > allTags ());
1795 // Compute the thumbnail for a link.
1797 // With a link to the original URL.
1798 // Understands various services (youtube.com...)
1799 // Input: $url = URL for which the thumbnail must be found.
1800 // $href = if provided, this URL will be followed instead of $url
1801 // Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1802 // Some of them may be missing.
1803 // Return an empty array if no thumbnail available.
1804 function computeThumbnail ( $url , $href = false )
1806 if (! $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ]) return array ();
1807 if ( $href == false ) $href = $url ;
1809 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1810 // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1811 // ^^^^^^^^^^^ ^^^^^^^^^^^
1812 $domain = parse_url ( $url , PHP_URL_HOST
);
1813 if ( $domain == 'youtube.com' || $domain == 'www.youtube.com' )
1815 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract video ID and get thumbnail
1816 if (! empty ( $params [ 'v' ])) return array ( 'src' => 'https://img.youtube.com/vi/' . $params [ 'v' ]. '/default.jpg' ,
1817 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1819 if ( $domain == 'youtu.be' ) // Youtube short links
1821 $path = parse_url ( $url , PHP_URL_PATH
);
1822 return array ( 'src' => 'https://img.youtube.com/vi' . $path . '/default.jpg' ,
1823 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1825 if ( $domain == 'pix.toile-libre.org' ) // pix.toile-libre.org image hosting
1827 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract image filename.
1828 if (! empty ( $params ) && ! empty ( $params [ 'img' ])) return array ( 'src' => 'http://pix.toile-libre.org/upload/thumb/' . urlencode ( $params [ 'img' ]),
1829 'href' => $href , 'style' => 'max-width:120px; max-height:150px' , 'alt' => 'pix.toile-libre.org thumbnail' );
1832 if ( $domain == 'imgur.com' )
1834 $path = parse_url ( $url , PHP_URL_PATH
);
1835 if ( startsWith ( $path , '/a/' )) return array (); // Thumbnails for albums are not available.
1836 if ( startsWith ( $path , '/r/' )) return array ( 'src' => 'https://i.imgur.com/' . basename ( $path ). 's.jpg' ,
1837 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1838 if ( startsWith ( $path , '/gallery/' )) return array ( 'src' => 'https://i.imgur.com' . substr ( $path , 8 ). 's.jpg' ,
1839 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1841 if ( substr_count ( $path , '/' )== 1 ) return array ( 'src' => 'https://i.imgur.com/' . substr ( $path , 1 ). 's.jpg' ,
1842 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1844 if ( $domain == 'i.imgur.com' )
1846 $pi = pathinfo ( parse_url ( $url , PHP_URL_PATH
));
1847 if (! empty ( $pi [ 'filename' ])) return array ( 'src' => 'https://i.imgur.com/' . $pi [ 'filename' ]. 's.jpg' ,
1848 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1850 if ( $domain == 'dailymotion.com' || $domain == 'www.dailymotion.com' )
1852 if ( strpos ( $url , 'dailymotion.com/video/' )!== false )
1854 $thumburl = str_replace ( 'dailymotion.com/video/' , 'dailymotion.com/thumbnail/video/' , $url );
1855 return array ( 'src' => $thumburl ,
1856 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'DailyMotion thumbnail' );
1859 if ( endsWith ( $domain , '.imageshack.us' ))
1861 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1862 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1864 $thumburl = substr ( $url , 0 , strlen ( $url )- strlen ( $ext )). 'th.' . $ext ;
1865 return array ( 'src' => $thumburl ,
1866 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'imageshack.us thumbnail' );
1870 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1871 // So we deport the thumbnail generation in order not to slow down page generation
1872 // (and we also cache the thumbnail)
1874 if (! $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ]) return array (); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1876 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' )
1877 || $domain == 'vimeo.com'
1878 || $domain == 'ted.com' || endsWith ( $domain , '.ted.com' )
1879 || $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' )
1882 if ( $domain == 'vimeo.com' )
1883 { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
1884 $path = parse_url ( $url , PHP_URL_PATH
);
1885 if (! preg_match ( '!/\d+.+?!' , $path )) return array (); // This is not a single video URL.
1887 if ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
1888 { // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
1889 $path = parse_url ( $url , PHP_URL_PATH
);
1890 if (! preg_match ( '!/\d+.+?!' , $path )) return array ();
1892 if ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
1893 { // Make sure this TED URL points to a video (/talks/...)
1894 $path = parse_url ( $url , PHP_URL_PATH
);
1895 if ( "/talks/" !== substr ( $path , 0 , 7 )) return array (); // This is not a single video URL.
1897 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1898 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . $sign . '&url=' . urlencode ( $url ),
1899 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1902 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1903 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1904 // But using the extension will do.
1905 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1906 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1908 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1909 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . $sign . '&url=' . urlencode ( $url ),
1910 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1912 return array (); // No thumbnail.
1917 // Returns the HTML code to display a thumbnail for a link
1918 // with a link to the original URL.
1919 // Understands various services (youtube.com...)
1920 // Input: $url = URL for which the thumbnail must be found.
1921 // $href = if provided, this URL will be followed instead of $url
1922 // Returns '' if no thumbnail available.
1923 function thumbnail ( $url , $href = false )
1925 $t = computeThumbnail ( $url , $href );
1926 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1928 $html = '<a href="' . escape ( $t [ 'href' ]). '"><img src="' . escape ( $t [ 'src' ]). '"' ;
1929 if (! empty ( $t [ 'width' ])) $html .= ' width="' . escape ( $t [ 'width' ]). '"' ;
1930 if (! empty ( $t [ 'height' ])) $html .= ' height="' . escape ( $t [ 'height' ]). '"' ;
1931 if (! empty ( $t [ 'style' ])) $html .= ' style="' . escape ( $t [ 'style' ]). '"' ;
1932 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . escape ( $t [ 'alt' ]). '"' ;
1937 // Returns the HTML code to display a thumbnail for a link
1938 // for the picture wall (using lazy image loading)
1939 // Understands various services (youtube.com...)
1940 // Input: $url = URL for which the thumbnail must be found.
1941 // $href = if provided, this URL will be followed instead of $url
1942 // Returns '' if no thumbnail available.
1943 function lazyThumbnail ( $url , $href = false )
1945 $t = computeThumbnail ( $url , $href );
1946 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1948 $html = '<a href="' . escape ( $t [ 'href' ]). '">' ;
1951 $html .= '<img class="b-lazy" src="#" data-src="' . escape ( $t [ 'src' ]). '"' ;
1953 if (! empty ( $t [ 'width' ])) $html .= ' width="' . escape ( $t [ 'width' ]). '"' ;
1954 if (! empty ( $t [ 'height' ])) $html .= ' height="' . escape ( $t [ 'height' ]). '"' ;
1955 if (! empty ( $t [ 'style' ])) $html .= ' style="' . escape ( $t [ 'style' ]). '"' ;
1956 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . escape ( $t [ 'alt' ]). '"' ;
1959 // No-JavaScript fallback.
1960 $html .= '<noscript><img src="' . escape ( $t [ 'src' ]). '"' ;
1961 if (! empty ( $t [ 'width' ])) $html .= ' width="' . escape ( $t [ 'width' ]). '"' ;
1962 if (! empty ( $t [ 'height' ])) $html .= ' height="' . escape ( $t [ 'height' ]). '"' ;
1963 if (! empty ( $t [ 'style' ])) $html .= ' style="' . escape ( $t [ 'style' ]). '"' ;
1964 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . escape ( $t [ 'alt' ]). '"' ;
1965 $html .= '></noscript></a>' ;
1971 // -----------------------------------------------------------------------------------------------
1973 // This function should NEVER be called if the file data/config.php exists.
1976 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1977 if ( endsWith ( $_SERVER [ 'HTTP_HOST' ], '.free.fr' ) && ! is_dir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' )) mkdir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' , 0705 );
1980 // This part makes sure sessions works correctly.
1981 // (Because on some hosts, session.save_path may not be set correctly,
1982 // or we may not have write access to it.)
1983 if ( isset ( $_GET [ 'test_session' ]) && ( ! isset ( $_SESSION ) || ! isset ( $_SESSION [ 'session_tested' ]) || $_SESSION [ 'session_tested' ]!= 'Working' ))
1984 { // Step 2: Check if data in session is correct.
1985 echo '<pre>Sessions do not seem to work correctly on your server.<br>' ;
1986 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>' ;
1987 echo 'It currently points to ' . session_save_path (). '<br>' ;
1988 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>' ;
1989 echo '<br><a href="?">Click to try again.</a></pre>' ;
1992 if (! isset ( $_SESSION [ 'session_tested' ]))
1993 { // Step 1 : Try to store data in session and reload page.
1994 $_SESSION [ 'session_tested' ] = 'Working' ; // Try to set a variable in session.
1995 header ( 'Location: ' . indexUrl (). '?test_session' ); // Redirect to check stored data.
1997 if ( isset ( $_GET [ 'test_session' ]))
1998 { // Step 3: Sessions are OK. Remove test parameter from URL.
1999 header ( 'Location: ' . indexUrl ());
2003 if (! empty ( $_POST [ 'setlogin' ]) && ! empty ( $_POST [ 'setpassword' ]))
2006 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
2007 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
2008 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
2009 $GLOBALS [ 'timezone' ] = $tz ;
2010 // Everything is ok, let's create config file.
2011 $GLOBALS [ 'login' ] = $_POST [ 'setlogin' ];
2012 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
2013 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
2014 $GLOBALS [ 'title' ] = ( empty ( $_POST [ 'title' ]) ? 'Shared links on ' . escape ( indexUrl ()) : $_POST [ 'title' ] );
2015 $GLOBALS [ 'config' ][ 'ENABLE_UPDATECHECK' ] = ! empty ( $_POST [ 'updateCheck' ]);
2017 echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location= \' ?do=login \' ;</script>' ;
2021 // Display config form:
2022 list ( $timezone_form , $timezone_js ) = templateTZform ();
2023 $timezone_html = '' ; if ( $timezone_form != '' ) $timezone_html = '<tr><td><b>Timezone:</b></td><td>' . $timezone_form . '</td></tr>' ;
2025 $PAGE = new pageBuilder
;
2026 $PAGE- > assign ( 'timezone_html' , $timezone_html );
2027 $PAGE- > assign ( 'timezone_js' , $timezone_js );
2028 $PAGE- > renderPage ( 'install' );
2032 // Generates the timezone selection form and JavaScript.
2033 // Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
2034 // Output: array(html,js)
2035 // Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
2036 // Returns array('','') if server does not support timezones list. (e.g. PHP 5.1 on free.fr)
2037 function templateTZform ( $ptz = false )
2039 if ( function_exists ( 'timezone_identifiers_list' )) // because of old PHP version (5.1) which can be found on free.fr
2041 // Try to split the provided timezone.
2042 if ( $ptz == false ) { $l
= timezone_identifiers_list (); $ptz
= $l
[ 0 ]; }
2043 $spos = strpos ( $ptz , '/' ); $pcontinent = substr ( $ptz , 0 , $spos ); $pcity = substr ( $ptz , $spos +
1 );
2045 // Display config form:
2046 $timezone_form = '' ;
2048 // The list is in the form "Europe/Paris", "America/Argentina/Buenos_Aires"...
2049 // We split the list in continents/cities.
2050 $continents = array ();
2052 foreach ( timezone_identifiers_list () as $tz )
2054 if ( $tz == 'UTC' ) $tz = 'UTC/UTC' ;
2055 $spos = strpos ( $tz , '/' );
2058 $continent = substr ( $tz , 0 , $spos ); $city = substr ( $tz , $spos +
1 );
2059 $continents [ $continent ]= 1 ;
2060 if (! isset ( $cities [ $continent ])) $cities [ $continent ]= '' ;
2061 $cities [ $continent ].= '<option value="' . $city . '"' .( $pcity == $city ? ' selected' : '' ). '>' . $city . '</option>' ;
2064 $continents_html = '' ;
2065 $continents = array_keys ( $continents );
2066 foreach ( $continents as $continent )
2067 $continents_html .= '<option value="' . $continent . '"' .( $pcontinent == $continent ? ' selected' : '' ). '>' . $continent . '</option>' ;
2068 $cities_html = $cities [ $pcontinent ];
2069 $timezone_form = "Continent: <select name= \" continent \" id= \" continent \" onChange= \" onChangecontinent(); \" > ${continents_html} </select>" ;
2070 $timezone_form .= " City: <select name= \" city \" id= \" city \" > ${cities[$pcontinent]} </select><br />" ;
2071 $timezone_js = "<script>" ;
2072 $timezone_js .= "function onChangecontinent() {document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];} " ;
2073 $timezone_js .= "var citiescontinent = " . json_encode ( $cities ). ";" ;
2074 $timezone_js .= "</script>" ;
2075 return array ( $timezone_form , $timezone_js );
2077 return array ( '' , '' );
2080 // Tells if a timezone is valid or not.
2081 // If not valid, returns false.
2082 // If system does not support timezone list, returns false.
2083 function isTZvalid ( $continent , $city )
2085 $tz = $continent . '/' . $city ;
2086 if ( function_exists ( 'timezone_identifiers_list' )) // because of old PHP version (5.1) which can be found on free.fr
2088 if ( in_array ( $tz , timezone_identifiers_list ())) // it's a valid timezone?
2093 if (! function_exists ( 'json_encode' )) {
2094 function json_encode ( $data ) {
2095 switch ( $type = gettype ( $data )) {
2099 return ( $data ? 'true' : 'false' );
2105 return '"' . addslashes ( $data ) . '"' ;
2107 $data = get_object_vars ( $data );
2109 $output_index_count = 0 ;
2110 $output_indexed = array ();
2111 $output_associative = array ();
2112 foreach ( $data as $key => $value ) {
2113 $output_indexed [] = json_encode ( $value );
2114 $output_associative [] = json_encode ( $key ) . ':' . json_encode ( $value );
2115 if ( $output_index_count !== NULL && $output_index_count ++
!== $key ) {
2116 $output_index_count = NULL ;
2119 if ( $output_index_count !== NULL ) {
2120 return '[' . implode ( ',' , $output_indexed ) . ']' ;
2122 return ' {' . implode(',', $output_associative) . '} ' ;
2125 return '' ; // Not supported
2130 // Re-write configuration file according to globals.
2131 // Requires some $GLOBALS to be set (login,hash,salt,title).
2132 // If the config file cannot be saved, an error message is displayed and the user is redirected to "Tools" menu.
2133 // (otherwise, the function simply returns.)
2134 function writeConfig ()
2136 if ( is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]) && ! isLoggedIn ()) die ( 'You are not authorized to alter config.' ); // Only logged in user can alter config.
2137 $config = '<?php $GLOBALS [ \' login \' ]=' . var_export ( $GLOBALS [ 'login' ], true ). '; $GLOBALS [ \' hash \' ]=' . var_export ( $GLOBALS [ 'hash' ], true ). '; $GLOBALS [ \' salt \' ]=' . var_export ( $GLOBALS [ 'salt' ], true ). '; ' ;
2138 $config .= ' $GLOBALS [ \' timezone \' ]=' . var_export ( $GLOBALS [ 'timezone' ], true ). '; date_default_timezone_set(' . var_export ( $GLOBALS [ 'timezone' ], true ). '); $GLOBALS [ \' title \' ]=' . var_export ( $GLOBALS [ 'title' ], true ). ';' ;
2139 $config .= ' $GLOBALS [ \' titleLink \' ]=' . var_export ( $GLOBALS [ 'titleLink' ], true ). '; ' ;
2140 $config .= ' $GLOBALS [ \' redirector \' ]=' . var_export ( $GLOBALS [ 'redirector' ], true ). '; ' ;
2141 $config .= ' $GLOBALS [ \' disablesessionprotection \' ]=' . var_export ( $GLOBALS [ 'disablesessionprotection' ], true ). '; ' ;
2142 $config .= ' $GLOBALS [ \' disablejquery \' ]=' . var_export ( $GLOBALS [ 'disablejquery' ], true ). '; ' ;
2143 $config .= ' $GLOBALS [ \' privateLinkByDefault \' ]=' . var_export ( $GLOBALS [ 'privateLinkByDefault' ], true ). '; ' ;
2144 $config .= ' $GLOBALS [ \' config \' ][ \' ENABLE_RSS_PERMALINKS \' ]=' . var_export ( $GLOBALS [ 'config' ][ 'ENABLE_RSS_PERMALINKS' ], true ). '; ' ;
2145 $config .= ' $GLOBALS [ \' config \' ][ \' ENABLE_UPDATECHECK \' ]=' . var_export ( $GLOBALS [ 'config' ][ 'ENABLE_UPDATECHECK' ], true ). '; ' ;
2146 $config .= ' $GLOBALS [ \' config \' ][ \' HIDE_PUBLIC_LINKS \' ]=' . var_export ( $GLOBALS [ 'config' ][ 'HIDE_PUBLIC_LINKS' ], true ). '; ' ;
2148 if (! file_put_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ], $config ) || strcmp ( file_get_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]), $config )!= 0 )
2150 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>' ;
2155 /* Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
2156 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
2157 The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
2158 This function is called by passing the URL:
2159 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
2160 [URL] is the URL of the link (e.g. a flickr page)
2161 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2162 The function below will fetch the image from the webservice and store it in the cache.
2164 function genThumbnail ()
2166 // Make sure the parameters in the URL were generated by us.
2167 $sign = hash_hmac ( 'sha256' , $_GET [ 'url' ], $GLOBALS [ 'salt' ]);
2168 if ( $sign != $_GET [ 'hmac' ]) die ( 'Naughty boy!' );
2170 // Let's see if we don't already have the image for this URL in the cache.
2171 $thumbname = hash ( 'sha1' , $_GET [ 'url' ]). '.jpg' ;
2172 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ))
2173 { // We have the thumbnail, just serve it:
2174 header ( 'Content-Type: image/jpeg' );
2175 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname );
2178 // We may also serve a blank image (if service did not respond)
2179 $blankname = hash ( 'sha1' , $_GET [ 'url' ]). '.gif' ;
2180 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname ))
2182 header ( 'Content-Type: image/gif' );
2183 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname );
2187 // Otherwise, generate the thumbnail.
2188 $url = $_GET [ 'url' ];
2189 $domain = parse_url ( $url , PHP_URL_HOST
);
2191 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' ))
2193 // Crude replacement to handle new flickr domain policy (They prefer www. now)
2194 $url = str_replace ( 'http://flickr.com/' , 'http://www.flickr.com/' , $url );
2196 // Is this a link to an image, or to a flickr page ?
2198 if ( endswith ( parse_url ( $url , PHP_URL_PATH
), '.jpg' ))
2199 { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
2200 preg_match ( '!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!' , $url , $matches );
2201 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ]. 'm.jpg' ;
2203 else // This is a flickr page (html)
2205 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 20 ); // Get the flickr html page.
2206 if ( strpos ( $httpstatus , '200 OK' )!== false )
2208 // flickr now nicely provides the URL of the thumbnail in each flickr page.
2209 preg_match ( '!<link rel= \" image_src \" href= \" (.+?) \" !' , $data , $matches );
2210 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2212 // In albums (and some other pages), the link rel="image_src" is not provided,
2213 // but flickr provides:
2214 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2217 preg_match ( '!<meta property= \" og:image \" content= \" (.+?) \" !' , $data , $matches );
2218 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2224 { // Let's download the image.
2225 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 ); // Image is 240x120, so 10 seconds to download should be enough.
2226 if ( strpos ( $httpstatus , '200 OK' )!== false )
2228 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2229 header ( 'Content-Type: image/jpeg' );
2236 elseif ( $domain == 'vimeo.com' )
2238 // This is more complex: we have to perform a HTTP request, then parse the result.
2239 // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2240 $vid = substr ( parse_url ( $url , PHP_URL_PATH
), 1 );
2241 list ( $httpstatus , $headers , $data ) = getHTTP ( 'https://vimeo.com/api/v2/video/' . escape ( $vid ). '.php' , 5 );
2242 if ( strpos ( $httpstatus , '200 OK' )!== false )
2244 $t = unserialize ( $data );
2245 $imageurl = $t [ 0 ][ 'thumbnail_medium' ];
2246 // Then we download the image and serve it to our client.
2247 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 );
2248 if ( strpos ( $httpstatus , '200 OK' )!== false )
2250 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2251 header ( 'Content-Type: image/jpeg' );
2258 elseif ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
2260 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2261 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2262 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2263 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2264 if ( strpos ( $httpstatus , '200 OK' )!== false )
2266 // Extract the link to the thumbnail
2267 preg_match ( '!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!' , $data , $matches );
2268 if (! empty ( $matches [ 1 ]))
2269 { // Let's download the image.
2270 $imageurl = $matches [ 1 ];
2271 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2272 if ( strpos ( $httpstatus , '200 OK' )!== false )
2274 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2275 file_put_contents ( $filepath , $data ); // Save image to cache.
2276 if ( resizeImage ( $filepath ))
2278 header ( 'Content-Type: image/jpeg' );
2279 echo file_get_contents ( $filepath );
2287 elseif ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
2289 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2290 // http://xkcd.com/327/
2291 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2292 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2293 if ( strpos ( $httpstatus , '200 OK' )!== false )
2295 // Extract the link to the thumbnail
2296 preg_match ( '!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!' , $data , $matches );
2297 if (! empty ( $matches [ 1 ]))
2298 { // Let's download the image.
2299 $imageurl = $matches [ 1 ];
2300 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2301 if ( strpos ( $httpstatus , '200 OK' )!== false )
2303 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2304 file_put_contents ( $filepath , $data ); // Save image to cache.
2305 if ( resizeImage ( $filepath ))
2307 header ( 'Content-Type: image/jpeg' );
2308 echo file_get_contents ( $filepath );
2318 // For all other domains, we try to download the image and make a thumbnail.
2319 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 30 ); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2320 if ( strpos ( $httpstatus , '200 OK' )!== false )
2322 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2323 file_put_contents ( $filepath , $data ); // Save image to cache.
2324 if ( resizeImage ( $filepath ))
2326 header ( 'Content-Type: image/jpeg' );
2327 echo file_get_contents ( $filepath );
2334 // Otherwise, return an empty image (8x8 transparent gif)
2335 $blankgif = base64_decode ( 'R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7' );
2336 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname , $blankgif ); // Also put something in cache so that this URL is not requested twice.
2337 header ( 'Content-Type: image/gif' );
2341 // Make a thumbnail of the image (to width: 120 pixels)
2342 // Returns true if success, false otherwise.
2343 function resizeImage ( $filepath )
2345 if (! function_exists ( 'imagecreatefromjpeg' )) return false ; // GD not present: no thumbnail possible.
2347 // Trick: some stupid people rename GIF as JPEG... or else.
2348 // So we really try to open each image type whatever the extension is.
2349 $header = file_get_contents ( $filepath , false , NULL , 0 , 256 ); // Read first 256 bytes and try to sniff file type.
2351 $i = strpos ( $header , 'GIF8' ); if (( $i !== false ) && ( $i == 0 )) $im = imagecreatefromgif ( $filepath ); // Well this is crude, but it should be enough.
2352 $i = strpos ( $header , 'PNG' ); if (( $i !== false ) && ( $i == 1 )) $im = imagecreatefrompng ( $filepath );
2353 $i = strpos ( $header , 'JFIF' ); if ( $i !== false ) $im = imagecreatefromjpeg ( $filepath );
2354 if (! $im ) return false ; // Unable to open image (corrupted or not an image)
2357 $ystart = 0 ; $yheight = $h ;
2358 if ( $h > $w ) { $ystart
= ( $h
/ 2 )-( $w
/ 2 ); $yheight
= $w
/ 2 ; }
2359 $nw = 120 ; // Desired width
2360 $nh = min ( floor (( $h * $nw )/ $w ), 120 ); // Compute new width/height, but maximum 120 pixels height.
2362 $im2 = imagecreatetruecolor ( $nw , $nh );
2363 imagecopyresampled ( $im2 , $im , 0 , 0 , 0 , $ystart , $nw , $nh , $w , $yheight );
2364 imageinterlace ( $im2 , true ); // For progressive JPEG.
2365 $tempname = $filepath . '_TEMP.jpg' ;
2366 imagejpeg ( $im2 , $tempname , 90 );
2370 rename ( $tempname , $filepath ); // Overwrite original picture with thumbnail.
2374 // Invalidate caches when the database is changed or the user logs out.
2375 // (e.g. tags cache).
2376 function invalidateCaches ()
2378 unset ( $_SESSION [ 'tags' ]); // Purge cache attached to session.
2379 pageCache
:: purgeCache (); // Purge page cache shared by sessions.
2382 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=genthumbnail' )) { genThumbnail (); exit ; } // Thumbnail generation/cache does not need the link database.
2383 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=rss' )) { showRSS (); exit ; }
2384 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=atom' )) { showATOM (); exit ; }
2385 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=dailyrss' )) { showDailyRSS (); exit ; }
2386 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=daily' )) { showDaily (); exit ; }
2387 if (! isset ( $_SESSION [ 'LINKS_PER_PAGE' ])) $_SESSION [ 'LINKS_PER_PAGE' ]= $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ];