]>
git.immae.eu Git - github/shaarli/Shaarli.git/blob - index.php
2 // Shaarli 0.0.40 beta - 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 // Hardcoded parameter (These parameters can be overwritten by creating the file /config/options.php)
9 $GLOBALS [ 'config' ][ 'DATADIR' ] = 'data' ; // Data subdirectory
10 $GLOBALS [ 'config' ][ 'CONFIG_FILE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/config.php' ; // Configuration file (user login/password)
11 $GLOBALS [ 'config' ][ 'DATASTORE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/datastore.php' ; // Data storage file.
12 $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ] = 20 ; // Default links per page.
13 $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/ipbans.php' ; // File storage for failures and bans.
14 $GLOBALS [ 'config' ][ 'BAN_AFTER' ] = 4 ; // Ban IP after this many failures.
15 $GLOBALS [ 'config' ][ 'BAN_DURATION' ] = 1800 ; // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
16 $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ] = false ; // If true, anyone can add/edit/delete links without having to login
17 $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] = false ; // If true, the moment when links were saved are not shown to users that are not logged in.
18 $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ] = true ; // Enable thumbnails in links.
19 $GLOBALS [ 'config' ][ 'CACHEDIR' ] = 'cache' ; // Cache directory for thumbnails for SLOW services (like flickr)
20 $GLOBALS [ 'config' ][ 'PAGECACHE' ] = 'pagecache' ; // Page cache directory.
21 $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ] = true ; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce webspace usage.
22 $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ] = '' ; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
23 $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/lastupdatecheck.txt' ; // For updates check of Shaarli.
24 $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ] = 86400 ; // Updates check frequency for Shaarli. 86400 seconds=24 hours
25 // Note: You must have publisher.php in the same directory as Shaarli index.php
26 // -----------------------------------------------------------------------------------------------
27 // You should not touch below (or at your own risks !)
28 // Optionnal config file.
29 if ( is_file ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' )) require ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' );
31 define ( 'shaarli_version' , '0.0.40 beta' );
32 define ( 'PHPPREFIX' , '<?php /* ' ); // Prefix to encapsulate data in php code.
33 define ( 'PHPSUFFIX' , ' */ ?>' ); // Suffix to encapsulate data in php code.
35 // Force cookie path (but do not change lifetime)
36 $cookie = session_get_cookie_params ();
37 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
38 session_set_cookie_params ( $cookie [ 'lifetime' ], $cookiedir ); // Set default cookie expiration and path.
40 // Set session parameters on server side.
41 define ( 'INACTIVITY_TIMEOUT' , 3600 ); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
42 ini_set ( 'session.use_cookies' , 1 ); // Use cookies to store session.
43 ini_set ( 'session.use_only_cookies' , 1 ); // Force cookies for session (phpsessionID forbidden in URL)
44 ini_set ( 'session.use_trans_sid' , false ); // Prevent php to use sessionID in URL if cookies are disabled.
45 session_name ( 'shaarli' );
46 if ( session_id () == '' ) session_start (); // Start session if needed (Some server auto-start sessions).
49 ini_set ( 'max_input_time' , '60' ); // High execution time in case of problematic imports/exports.
50 ini_set ( 'memory_limit' , '128M' ); // Try to set max upload file size and read (May not work on some hosts).
51 ini_set ( 'post_max_size' , '16M' );
52 ini_set ( 'upload_max_filesize' , '16M' );
54 error_reporting ( E_ALL^E_WARNING
); // See all error except warnings.
55 //error_reporting(-1); // See all errors (for debugging only)
57 include "inc/rain.tpl.class.php" ; //include Rain TPL
58 raintpl
:: $tpl_dir = "tpl/" ; // template directory
59 if (! is_dir ( 'tmp' )) { mkdir ( 'tmp' , 0705 ); chmod ( 'tmp' , 0705 ); }
60 raintpl
:: $cache_dir = "tmp/" ; // cache directory
62 ob_start (); // Output buffering for the page cache.
65 // In case stupid admin has left magic_quotes enabled in php.ini:
66 if ( get_magic_quotes_gpc ())
68 function stripslashes_deep ( $value ) { $value
= is_array ( $value
) ? array_map ( 'stripslashes_deep' , $value
) : stripslashes ( $value
); return $value
; }
69 $_POST = array_map ( 'stripslashes_deep' , $_POST );
70 $_GET = array_map ( 'stripslashes_deep' , $_GET );
71 $_COOKIE = array_map ( 'stripslashes_deep' , $_COOKIE );
74 // Prevent caching on client side or proxy: (yes, it's ugly)
75 header ( "Last-Modified: " . gmdate ( "D, d M Y H:i:s" ) . " GMT" );
76 header ( "Cache-Control: no-store, no-cache, must-revalidate" );
77 header ( "Cache-Control: post-check=0, pre-check=0" , false );
78 header ( "Pragma: no-cache" );
80 // Directories creations (Note that your web host may require differents rights than 705.)
81 if (! is_dir ( $GLOBALS [ 'config' ][ 'DATADIR' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'DATADIR' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'DATADIR' ], 0705 ); }
82 if (! is_dir ( 'tmp' )) { mkdir ( 'tmp' , 0705 ); chmod ( 'tmp' , 0705 ); } // For RainTPL temporary files.
83 if (! is_file ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/.htaccess' )) { file_put_contents ( $GLOBALS
[ 'config' ][ 'DATADIR' ]. '/.htaccess' , "Allow from none \n Deny from all \n " ); } // Protect data files.
84 if ( $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ])
86 if (! is_dir ( $GLOBALS [ 'config' ][ 'CACHEDIR' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'CACHEDIR' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'CACHEDIR' ], 0705 ); }
87 if (! is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/.htaccess' )) { file_put_contents ( $GLOBALS
[ 'config' ][ 'CACHEDIR' ]. '/.htaccess' , "Allow from none \n Deny from all \n " ); } // Protect data files.
90 // Run config screen if first run:
91 if (! is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ])) install ();
93 require $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]; // Read login/password hash into $GLOBALS.
95 // Handling of old config file which do not have the new parameters.
96 if ( empty ( $GLOBALS [ 'title' ])) $GLOBALS [ 'title' ]= 'Shared links on ' . htmlspecialchars ( indexUrl ());
97 if ( empty ( $GLOBALS [ 'timezone' ])) $GLOBALS [ 'timezone' ]= date_default_timezone_get ();
98 if ( empty ( $GLOBALS [ 'disablesessionprotection' ])) $GLOBALS [ 'disablesessionprotection' ]= false ;
100 autoLocale (); // Sniff browser language and set date format accordingly.
101 header ( 'Content-Type: text/html; charset=utf-8' ); // We use UTF-8 for proper international characters handling.
104 function checkphpversion ()
106 if ( version_compare ( PHP_VERSION
, '5.1.0' ) < 0 )
108 header ( 'Content-Type: text/plain; charset=utf-8' );
109 echo 'Your server supports php ' . PHP_VERSION
. '. Shaarli requires at least php 5.1.0, and thus cannot run. Sorry.' ;
114 // Checks if an update is available for Shaarli.
115 // (at most once a day, and only for registered user.)
116 // Output: '' = no new version.
117 // other= the available version.
118 function checkUpdate ()
120 if (! isLoggedIn ()) return '' ; // Do not check versions for visitors.
122 // Get latest version number at most once a day.
123 if (! is_file ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]) || ( filemtime ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ])< time ()-( $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ])))
125 $version = shaarli_version
;
126 list ( $httpstatus , $headers , $data ) = getHTTP ( 'http://sebsauvage.net/files/shaarli_version.txt' , 2 );
127 if ( strpos ( $httpstatus , '200 OK' )!== false ) $version = $data ;
128 // If failed, nevermind. We don't want to bother the user with that.
129 file_put_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ], $version ); // touch file date
132 $newestversion = file_get_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]);
133 if ( version_compare ( $newestversion , shaarli_version
)== 1 ) return $newestversion ;
138 // -----------------------------------------------------------------------------------------------
139 // Simple cache system (mainly for the RSS/ATOM feeds).
143 private $url ; // Full URL of the page to cache (typically the value returned by pageUrl())
144 private $shouldBeCached ; // boolean: Should this url be cached ?
145 private $filename ; // Name of the cache file for this url
148 $url = url (typically the value returned by pageUrl())
149 $shouldBeCached = boolean. If false, the cache will be disabled.
151 public function __construct ( $url , $shouldBeCached )
154 $this- > filename
= $GLOBALS [ 'config' ][ 'PAGECACHE' ]. '/' . sha1 ( $url ). '.cache' ;
155 $this- > shouldBeCached
= $shouldBeCached ;
158 // If the page should be cached and a cached version exists,
159 // returns the cached version (otherwise, return null).
160 public function cachedVersion ()
162 if (! $this- > shouldBeCached
) return null ;
163 if ( is_file ( $this- > filename
)) { return file_get_contents ( $this
-> filename
); exit ; }
167 // Put a page in the cache.
168 public function cache ( $page )
170 if (! $this- > shouldBeCached
) return ;
171 if (! is_dir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'PAGECACHE' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'PAGECACHE' ], 0705 ); }
172 file_put_contents ( $this- > filename
, $page );
175 // Purge the whole cache.
176 // (call with pageCache::purgeCache())
177 public static function purgeCache ()
179 if ( is_dir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ]))
181 $handler = opendir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ]);
182 if ( $handler !== false )
184 while (( $filename = readdir ( $handler ))!== false )
186 if ( endsWith ( $filename , '.cache' )) { unlink ( $GLOBALS
[ 'config' ][ 'PAGECACHE' ]. '/' . $filename
); }
196 // -----------------------------------------------------------------------------------------------
198 function logm ( $message )
200 $t = strval ( date ( 'Y/m/d_H:i:s' )). ' - ' . $_SERVER [ "REMOTE_ADDR" ]. ' - ' . strval ( $message ). " \n " ;
201 file_put_contents ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/log.txt' , $t , FILE_APPEND
);
204 // Same as nl2br(), but escapes < and >
205 function nl2br_escaped ( $html )
207 return str_replace ( '>' , '>' , str_replace ( '<' , '<' , nl2br ( $html )));
210 /* Returns the small hash of a string
211 eg. smallHash('20111006_131924') --> yZH23w
213 - are unique (well, as unique as crc32, at last)
214 - are always 6 characters long.
215 - only use the following characters: a-z A-Z 0-9 - _ @
216 - are NOT cryptographically secure (they CAN be forged)
217 In Shaarli, they are used as a tinyurl-like link to individual entries.
219 function smallHash ( $text )
221 $t = rtrim ( base64_encode ( hash ( 'crc32' , $text , true )), '=' );
222 $t = str_replace ( '+' , '-' , $t ); // Get rid of characters which need encoding in URLs.
223 $t = str_replace ( '/' , '_' , $t );
224 $t = str_replace ( '=' , '@' , $t );
228 // In a string, converts urls to clickable links.
229 // Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
230 function text2clickable ( $url )
232 $redir = empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ];
233 return preg_replace ( '!(((?:https?|ftp|file)://|apt:|magnet:)\S+[[:alnum:]]/?)!si' , '<a href="' . $redir . ' $1" rel="nofollow"> $1 </a>' , $url );
236 // This function inserts where relevant so that multiple spaces are properly displayed in HTML
237 // even in the absence of <pre> (This is used in description to keep text formatting)
238 function keepMultipleSpaces ( $text )
240 return str_replace ( ' ' , ' ' , $text );
243 // ------------------------------------------------------------------------------------------
244 // Sniff browser language to display dates in the right format automatically.
245 // (Note that is may not work on your server if the corresponding local is not installed.)
246 function autoLocale ()
248 $loc = 'en_US' ; // Default if browser does not send HTTP_ACCEPT_LANGUAGE
249 if ( isset ( $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ])) // eg. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
250 { // (It's a bit crude, but it works very well. Prefered language is always presented first.)
251 if ( preg_match ( '/([a-z] {2} (-[a-z] {2} )?)/i' , $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ], $matches )) $loc = $matches [ 1 ];
253 setlocale ( LC_TIME
, $loc ); // LC_TIME = Set local for date/time format only.
256 // ------------------------------------------------------------------------------------------
257 // PubSubHubbub protocol support (if enabled) [UNTESTED]
258 // (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
259 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ])) include './publisher.php' ;
262 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
264 $p = new Publisher ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]);
266 indexUrl (). '?do=atom' ,
269 $p- > publish_update ( $topic_url );
273 // ------------------------------------------------------------------------------------------
274 // Session management
276 // Returns the IP address of the client (Used to prevent session cookie hijacking.)
279 $ip = $_SERVER [ "REMOTE_ADDR" ];
280 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
281 if ( isset ( $_SERVER [ 'HTTP_X_FORWARDED_FOR' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_X_FORWARDED_FOR' ]; }
282 if ( isset ( $_SERVER [ 'HTTP_CLIENT_IP' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_CLIENT_IP' ]; }
286 // Check that user/password is correct.
287 function check_auth ( $login , $password )
289 $hash = sha1 ( $password . $login . $GLOBALS [ 'salt' ]);
290 if ( $login == $GLOBALS [ 'login' ] && $hash == $GLOBALS [ 'hash' ])
291 { // Login/password is correct.
292 $_SESSION [ 'uid' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // generate unique random number (different than phpsessionid)
293 $_SESSION [ 'ip' ]= allIPs (); // We store IP address(es) of the client to make sure session is not hijacked.
294 $_SESSION [ 'username' ]= $login ;
295 $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Set session expiration.
296 logm ( 'Login successful' );
299 logm ( 'Login failed for user ' . $login );
303 // Returns true if the user is logged in.
304 function isLoggedIn ()
306 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) return true ;
308 if (! isset ( $GLOBALS [ 'login' ])) return false ; // Shaarli is not configured yet.
310 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
311 if ( empty ( $_SESSION [ 'uid' ]) || ( $GLOBALS [ 'disablesessionprotection' ]== false && $_SESSION [ 'ip' ]!= allIPs ()) || time ()>= $_SESSION [ 'expires_on' ])
316 if (! empty ( $_SESSION [ 'longlastingsession' ])) $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // In case of "Stay signed in" checked.
317 else $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Standard session expiration date.
323 function logout () { if ( isset ( $_SESSION
)) { unset ( $_SESSION
[ 'uid' ]); unset ( $_SESSION
[ 'ip' ]); unset ( $_SESSION
[ 'username' ]);} }
326 // ------------------------------------------------------------------------------------------
327 // Brute force protection system
328 // Several consecutive failed logins will ban the IP address for 30 minutes.
329 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 ?>" );
330 include $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ];
331 // Signal a failed login. Will ban the IP if too many failures:
332 function ban_loginFailed ()
334 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
335 if (! isset ( $gb [ 'FAILURES' ][ $ip ])) $gb [ 'FAILURES' ][ $ip ]= 0 ;
336 $gb [ 'FAILURES' ][ $ip ] ++
;
337 if ( $gb [ 'FAILURES' ][ $ip ]>( $GLOBALS [ 'config' ][ 'BAN_AFTER' ]- 1 ))
339 $gb [ 'BANS' ][ $ip ]= time () +
$GLOBALS [ 'config' ][ 'BAN_DURATION' ];
340 logm ( 'IP address banned from login' );
342 $GLOBALS [ 'IPBANS' ] = $gb ;
343 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
346 // Signals a successful login. Resets failed login counter.
347 function ban_loginOk ()
349 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
350 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
351 $GLOBALS [ 'IPBANS' ] = $gb ;
352 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
355 // Checks if the user CAN login. If 'true', the user can try to login.
356 function ban_canLogin ()
358 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
359 if ( isset ( $gb [ 'BANS' ][ $ip ]))
361 // User is banned. Check if the ban has expired:
362 if ( $gb [ 'BANS' ][ $ip ]<= time ())
363 { // Ban expired, user can try to login again.
365 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
366 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
367 return true ; // Ban has expired, user can login.
369 return false ; // User is banned.
371 return true ; // User is not banned.
374 // ------------------------------------------------------------------------------------------
375 // Process login form: Check if login/password is correct.
376 if ( isset ( $_POST [ 'login' ]))
378 if (! ban_canLogin ()) die ( 'I said: NO. You are banned for the moment. Go away.' );
379 if ( isset ( $_POST [ 'password' ]) && tokenOk ( $_POST [ 'token' ]) && ( check_auth ( $_POST [ 'login' ], $_POST [ 'password' ])))
380 { // Login/password is ok.
382 // If user wants to keep the session cookie even after the browser closes:
383 if (! empty ( $_POST [ 'longlastingsession' ]))
385 $_SESSION [ 'longlastingsession' ]= 31536000 ; // (31536000 seconds = 1 year)
386 $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // Set session expiration on server-side.
388 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
389 session_set_cookie_params ( $_SESSION [ 'longlastingsession' ], $cookiedir ); // Set session cookie expiration on client side
390 // Note: Never forget the trailing slash on the cookie path !
391 session_regenerate_id ( true ); // Send cookie with new expiration date to browser.
393 else // Standard session expiration (=when browser closes)
395 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
396 session_set_cookie_params ( 0 , $cookiedir ); // 0 means "When browser closes"
397 session_regenerate_id ( true );
399 // Optional redirect after login:
400 if ( isset ( $_GET [ 'post' ])) { header ( 'Location: ?post=' . urlencode ( $_GET
[ 'post' ]).(! empty ( $_GET
[ 'title' ])? '&title=' . urlencode ( $_GET
[ 'title' ]): '' ).(! empty ( $_GET
[ 'source' ])? '&source=' . urlencode ( $_GET
[ 'source' ]): '' )); exit ; }
401 if ( isset ( $_POST [ 'returnurl' ]))
403 if ( endsWith ( $_POST [ 'returnurl' ], '?do=login' )) { header ( 'Location: ?' ); exit ; } // Prevent loops over login screen.
404 header ( 'Location: ' . $_POST [ 'returnurl' ]); exit ;
406 header ( 'Location: ?' ); exit ;
411 echo '<script language="JavaScript">alert("Wrong login/password.");document.location= \' ?do=login \' ;</script>' ; // Redirect to login screen.
416 // ------------------------------------------------------------------------------------------
417 // Misc utility functions:
419 // Returns the server URL (including port and http/https), without path.
420 // eg. "http://myserver.com:8080"
421 // You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
424 $https = (! empty ( $_SERVER [ 'HTTPS' ]) && ( strtolower ( $_SERVER [ 'HTTPS' ])== 'on' )) || $_SERVER [ "SERVER_PORT" ]== '443' ; // HTTPS detection.
425 $serverport = ( $_SERVER [ "SERVER_PORT" ]== '80' || ( $https && $_SERVER [ "SERVER_PORT" ]== '443' ) ? '' : ':' . $_SERVER [ "SERVER_PORT" ]);
426 return 'http' .( $https ? 's' : '' ). '://' . $_SERVER [ "SERVER_NAME" ]. $serverport ;
429 // Returns the absolute URL of current script, without the query.
430 // (eg. http://sebsauvage.net/links/)
433 $scriptname = $_SERVER [ "SCRIPT_NAME" ];
434 // If the script is named 'index.php', we remove it (for better looking URLs,
435 // eg. http://mysite.com/shaarli/?abcde instead of http://mysite.com/shaarli/index.php?abcde)
436 if ( endswith ( $scriptname , 'index.php' )) $scriptname = substr ( $scriptname , 0 , strlen ( $scriptname )- 9 );
437 return serverUrl () . $scriptname ;
440 // Returns the absolute URL of current script, WITH the query.
441 // (eg. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
444 return indexUrl ().(! empty ( $_SERVER [ "QUERY_STRING" ]) ? '?' . $_SERVER [ "QUERY_STRING" ] : '' );
447 // Convert post_max_size/upload_max_filesize (eg.'16M') parameters to bytes.
448 function return_bytes ( $val )
450 $val = trim ( $val ); $last = strtolower ( $val [ strlen ( $val )- 1 ]);
453 case 'g' : $val *= 1024 ;
454 case 'm' : $val *= 1024 ;
455 case 'k' : $val *= 1024 ;
460 // Try to determine max file size for uploads (POST).
461 // Returns an integer (in bytes)
462 function getMaxFileSize ()
464 $size1 = return_bytes ( ini_get ( 'post_max_size' ));
465 $size2 = return_bytes ( ini_get ( 'upload_max_filesize' ));
466 // Return the smaller of two:
467 $maxsize = min ( $size1 , $size2 );
468 // FIXME: Then convert back to readable notations ? (eg. 2M instead of 2000000)
472 // Tells if a string start with a substring or not.
473 function startsWith ( $haystack , $needle , $case = true )
475 if ( $case ){ return ( strcmp ( substr ( $haystack
, 0 , strlen ( $needle
)), $needle
)=== 0 );}
476 return ( strcasecmp ( substr ( $haystack , 0 , strlen ( $needle )), $needle )=== 0 );
479 // Tells if a string ends with a substring or not.
480 function endsWith ( $haystack , $needle , $case = true )
482 if ( $case ){ return ( strcmp ( substr ( $haystack
, strlen ( $haystack
) - strlen ( $needle
)), $needle
)=== 0 );}
483 return ( strcasecmp ( substr ( $haystack , strlen ( $haystack ) - strlen ( $needle )), $needle )=== 0 );
486 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
487 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
488 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
489 function linkdate2timestamp ( $linkdate )
492 $r = sscanf ( $linkdate , '%4d%2d%2d_%2d%2d%2d' , $Y , $M , $D , $h , $m , $s );
493 return mktime ( $h , $m , $s , $M , $D , $Y );
496 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
497 (used to build the pubDate attribute in RSS feed.) */
498 function linkdate2rfc822 ( $linkdate )
500 return date ( 'r' , linkdate2timestamp ( $linkdate )); // 'r' is for RFC822 date format.
503 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
504 (used to build the updated tags in ATOM feed.) */
505 function linkdate2iso8601 ( $linkdate )
507 return date ( 'c' , linkdate2timestamp ( $linkdate )); // 'c' is for ISO 8601 date format.
510 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a localized date format.
511 (used to display link date on screen)
512 The date format is automatically chosen according to locale/languages sniffed from browser headers (see autoLocale()). */
513 function linkdate2locale ( $linkdate )
515 return utf8_encode ( strftime ( '%c' , linkdate2timestamp ( $linkdate ))); // %c is for automatic date format according to locale.
516 // Note that if you use a local which is not installed on your webserver,
517 // the date will not be displayed in the chosen locale, but probably in US notation.
520 // Parse HTTP response headers and return an associative array.
521 function http_parse_headers_shaarli ( $headers )
524 foreach ( $headers as $header )
526 $i = strpos ( $header , ': ' );
529 $key = substr ( $header , 0 , $i );
530 $value = substr ( $header , $i +
2 , strlen ( $header )- $i-2 );
538 Input: $url : url to get (http://...)
539 $timeout : Network timeout (will wait this many seconds for an anwser before giving up).
540 Output: An array. [0] = HTTP status message (eg. "HTTP/1.1 200 OK") or error message
541 [1] = associative array containing HTTP response headers (eg. echo getHTTP($url)[1]['Content-Type'])
543 Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
544 if (strpos($httpstatus,'200 OK')!==false)
545 echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
547 echo 'There was an error: '.htmlspecialchars($httpstatus)
549 function getHTTP ( $url , $timeout = 30 )
553 $options = array ( 'http' => array ( 'method' => 'GET' , 'timeout' => $timeout )); // Force network timeout
554 $context = stream_context_create ( $options );
555 $data = file_get_contents ( $url , false , $context ,- 1 , 4000000 ); // We download at most 4 Mb from source.
556 if (! $data ) { return array ( 'HTTP Error' , array (), '' ); }
557 $httpStatus = $http_response_header [ 0 ]; // eg. "HTTP/1.1 200 OK"
558 $responseHeaders = http_parse_headers_shaarli ( $http_response_header );
559 return array ( $httpStatus , $responseHeaders , $data );
561 catch ( Exception
$e ) // getHTTP *can* fail silentely (we don't care if the title cannot be fetched)
563 return array ( $e- > getMessage (), '' , '' );
567 // Extract title from an HTML document.
568 // (Returns an empty string if not found.)
569 function html_extract_title ( $html )
571 return preg_match ( '!<title>(.*?)</title>!is' , $html , $matches ) ? trim ( str_replace ( " \n " , ' ' , $matches [ 1 ])) : '' ;
574 // ------------------------------------------------------------------------------------------
575 // Token management for XSRF protection
576 // Token should be used in any form which acts on data (create,update,delete,import...).
577 if (! isset ( $_SESSION [ 'tokens' ])) $_SESSION [ 'tokens' ]= array (); // Token are attached to the session.
582 $rnd = sha1 ( uniqid ( '' , true ). '_' . mt_rand (). $GLOBALS [ 'salt' ]); // We generate a random string.
583 $_SESSION [ 'tokens' ][ $rnd ]= 1 ; // Store it on the server side.
587 // Tells if a token is ok. Using this function will destroy the token.
589 function tokenOk ( $token )
591 if ( isset ( $_SESSION [ 'tokens' ][ $token ]))
593 unset ( $_SESSION [ 'tokens' ][ $token ]); // Token is used: destroy it.
594 return true ; // Token is ok.
596 return false ; // Wrong token, or already used.
599 // ------------------------------------------------------------------------------------------
600 /* This class is in charge of building the final page.
601 (This is basically a wrapper around RainTPL which pre-fills some fields.)
603 p.assign('myfield','myvalue');
604 p.renderPage('mytemplate');
609 private $tpl ; // RainTPL template
611 function __construct ()
616 private function initialize ()
618 $this- > tpl
= new RainTPL
;
619 $this- > tpl
-> assign ( 'newversion' , checkUpdate ());
620 $this- > tpl
-> assign ( 'feedurl' , htmlspecialchars ( indexUrl ()));
621 $searchcrits = '' ; // Search criteria
622 if (! empty ( $_GET [ 'searchtags' ])) $searchcrits .= '&searchtags=' . urlencode ( $_GET [ 'searchtags' ]);
623 elseif (! empty ( $_GET [ 'searchterm' ])) $searchcrits .= '&searchterm=' . urlencode ( $_GET [ 'searchterm' ]);
624 $this- > tpl
-> assign ( 'searchcrits' , $searchcrits );
625 $this- > tpl
-> assign ( 'source' , indexUrl ());
626 $this- > tpl
-> assign ( 'version' , shaarli_version
);
627 $this- > tpl
-> assign ( 'scripturl' , indexUrl ());
628 $this- > tpl
-> assign ( 'pagetitle' , 'Shaarli' );
629 $this- > tpl
-> assign ( 'privateonly' ,! empty ( $_SESSION [ 'privateonly' ])); // Show only private links ?
630 if (! empty ( $GLOBALS [ 'title' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'title' ]);
631 if (! empty ( $GLOBALS [ 'pagetitle' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'pagetitle' ]);
632 $this- > tpl
-> assign ( 'shaarlititle' , empty ( $GLOBALS [ 'title' ]) ? 'Shaarli' : $GLOBALS [ 'title' ] );
636 // The following assign() method is basically the same as RainTPL (except that it's lazy)
637 public function assign ( $what , $where )
639 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
640 $this- > tpl
-> assign ( $what , $where );
643 // Render a specific page (using a template).
644 // eg. pb.renderPage('picwall')
645 public function renderPage ( $page )
647 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
648 $this- > tpl
-> draw ( $page );
652 // ------------------------------------------------------------------------------------------
653 /* Data storage for links.
654 This object behaves like an associative array.
656 $mylinks = new linkdb();
657 echo $mylinks['20110826_161819']['title'];
658 foreach($mylinks as $link)
659 echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description'];
662 title : Title of the link
663 url : URL of the link. Can be absolute or relative. Relative URLs are permalinks (eg.'?m-ukcw')
664 description : description of the entry
665 private : Is this link private ? 0=no, other value=yes
666 linkdate : date of the creation of this entry, in the form YYYYMMDD_HHMMSS (eg.'20110914_192317')
667 tags : tags attached to this entry (separated by spaces)
669 We implement 3 interfaces:
670 - ArrayAccess so that this object behaves like an associative array.
671 - Iterator so that this object can be used in foreach() loops.
672 - Countable interface so that we can do a count() on this object.
674 class linkdb
implements Iterator
, Countable
, ArrayAccess
676 private $links ; // List of links (associative array. Key=linkdate (eg. "20110823_124546"), value= associative array (keys:title,description...)
677 private $urls ; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate)
678 private $keys ; // List of linkdate keys (for the Iterator interface implementation)
679 private $position ; // Position in the $this->keys array. (for the Iterator interface implementation.)
680 private $loggedin ; // Is the used logged in ? (used to filter private links)
683 function __construct ( $isLoggedIn )
684 // Input : $isLoggedIn : is the used logged in ?
686 $this- > loggedin
= $isLoggedIn ;
687 $this- > checkdb (); // Make sure data file exists.
688 $this- > readdb (); // Then read it.
691 // ---- Countable interface implementation
692 public function count () { return count ( $this
-> links
); }
694 // ---- ArrayAccess interface implementation
695 public function offsetSet ( $offset , $value )
697 if (! $this- > loggedin
) die ( 'You are not authorized to add a link.' );
698 if ( empty ( $value [ 'linkdate' ]) || empty ( $value [ 'url' ])) die ( 'Internal Error: A link should always have a linkdate and url.' );
699 if ( empty ( $offset )) die ( 'You must specify a key.' );
700 $this- > links
[ $offset ] = $value ;
701 $this- > urls
[ $value [ 'url' ]]= $offset ;
703 public function offsetExists ( $offset ) { return array_key_exists ( $offset
, $this
-> links
); }
704 public function offsetUnset ( $offset )
706 if (! $this- > loggedin
) die ( 'You are not authorized to delete a link.' );
707 $url = $this- > links
[ $offset ][ 'url' ]; unset ( $this- > urls
[ $url ]);
708 unset ( $this- > links
[ $offset ]);
710 public function offsetGet ( $offset ) { return isset ( $this
-> links
[ $offset
]) ? $this
-> links
[ $offset
] : null ; }
712 // ---- Iterator interface implementation
713 function rewind () { $this
-> keys
= array_keys ( $this
-> links
); rsort ( $this
-> keys
); $this
-> position
= 0 ; } // Start over for iteration, ordered by date (latest first).
714 function key () { return $this
-> keys
[ $this
-> position
]; } // current key
715 function current () { return $this
-> links
[ $this
-> keys
[ $this
-> position
]]; } // current value
716 function next () { ++$this
-> position
; } // go to next item
717 function valid () { return isset ( $this
-> keys
[ $this
-> position
]); } // Check if current position is valid.
720 private function checkdb () // Check if db directory and file exists.
722 if (! file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ])) // Create a dummy database for example.
724 $this- > links
= array ();
725 $link = array ( 'title' => 'Shaarli - sebsauvage.net' , 'url' => 'http://sebsauvage.net/wiki/doku.php?id=php:shaarli' , 'description' => 'Welcome to Shaarli ! This is a bookmark. To edit or delete me, you must first login.' , 'private' => 0 , 'linkdate' => '20110914_190000' , 'tags' => 'opensource software' );
726 $this- > links
[ $link [ 'linkdate' ]] = $link ;
727 $link = array ( 'title' => 'My secret stuff... - Pastebin.com' , 'url' => 'http://pastebin.com/smCEEeSn' , 'description' => 'SShhhh!! I \' m a private link only YOU can see. You can delete me too.' , 'private' => 1 , 'linkdate' => '20110914_074522' , 'tags' => 'secretstuff' );
728 $this- > links
[ $link [ 'linkdate' ]] = $link ;
729 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
); // Write database to disk
733 // Read database from disk to memory
734 private function readdb ()
737 $this- > links
=( file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ]) ? unserialize ( gzinflate ( base64_decode ( substr ( file_get_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ]), strlen ( PHPPREFIX
),- strlen ( PHPSUFFIX
))))) : array () );
738 // Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439
740 // If user is not logged in, filter private links.
741 if (! $this- > loggedin
)
744 foreach ( $this- > links
as $link ) { if ( $link
[ 'private' ]!= 0 ) $toremove
[]= $link
[ 'linkdate' ]; }
745 foreach ( $toremove as $linkdate ) { unset ( $this
-> links
[ $linkdate
]); }
748 // Keep the list of the mapping URLs-->linkdate up-to-date.
750 foreach ( $this- > links
as $link ) { $this
-> urls
[ $link
[ 'url' ]]= $link
[ 'linkdate' ]; }
753 // Save database from memory to disk.
754 public function savedb ()
756 if (! $this- > loggedin
) die ( 'You are not authorized to change the database.' );
757 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
);
761 // Returns the link for a given URL (if it exists). false it does not exist.
762 public function getLinkFromUrl ( $url )
764 if ( isset ( $this- > urls
[ $url ])) return $this- > links
[ $this- > urls
[ $url ]];
768 // Case insentitive search among links (in url, title and description). Returns filtered list of links.
769 // eg. print_r($mydb->filterFulltext('hollandais'));
770 public function filterFulltext ( $searchterms )
772 // FIXME: explode(' ',$searchterms) and perform a AND search.
773 // FIXME: accept double-quotes to search for a string "as is" ?
775 $s = strtolower ( $searchterms );
776 foreach ( $this- > links
as $l )
778 $found = ( strpos ( strtolower ( $l [ 'title' ]), $s )!== false )
779 || ( strpos ( strtolower ( $l [ 'description' ]), $s )!== false )
780 || ( strpos ( strtolower ( $l [ 'url' ]), $s )!== false )
781 || ( strpos ( strtolower ( $l [ 'tags' ]), $s )!== false );
782 if ( $found ) $filtered [ $l [ 'linkdate' ]] = $l ;
789 // You can specify one or more tags (tags can be separated by space or comma).
790 // eg. print_r($mydb->filterTags('linux programming'));
791 public function filterTags ( $tags , $casesensitive = false )
793 $t = str_replace ( ',' , ' ' ,( $casesensitive ? $tags : strtolower ( $tags )));
794 $searchtags = explode ( ' ' , $t );
796 foreach ( $this- > links
as $l )
798 $linktags = explode ( ' ' ,( $casesensitive ? $l [ 'tags' ]: strtolower ( $l [ 'tags' ])));
799 if ( count ( array_intersect ( $linktags , $searchtags )) == count ( $searchtags ))
800 $filtered [ $l [ 'linkdate' ]] = $l ;
806 // Filter by day. Day must be in the form 'YYYYMMDD' (eg. '20120125')
807 // Sort order is: older articles first.
808 // eg. print_r($mydb->filterDay('20120125'));
809 public function filterDay ( $day )
812 foreach ( $this- > links
as $l )
814 if ( startsWith ( $l [ 'linkdate' ], $day )) $filtered [ $l [ 'linkdate' ]] = $l ;
819 // Filter by smallHash.
820 // Only 1 article is returned.
821 public function filterSmallHash ( $smallHash )
824 foreach ( $this- > links
as $l )
826 if ( $smallHash == smallHash ( $l [ 'linkdate' ])) // Yes, this is ugly and slow
828 $filtered [ $l [ 'linkdate' ]] = $l ;
835 // Returns the list of all tags
836 // Output: associative array key=tags, value=0
837 public function allTags ()
840 foreach ( $this- > links
as $link )
841 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
842 if (! empty ( $tag )) $tags [ $tag ]=( empty ( $tags [ $tag ]) ? 1 : $tags [ $tag ] +
1 );
843 arsort ( $tags ); // Sort tags by usage (most used tag first)
847 // Returns the list of days containing articles (oldest first)
848 // Output: An array containing days (in format YYYYMMDD).
849 public function days ()
852 foreach ( array_keys ( $this- > links
) as $day )
854 $linkdays [ substr ( $day , 0 , 8 )]= 0 ;
856 $linkdays = array_keys ( $linkdays );
862 // ------------------------------------------------------------------------------------------
863 // Ouput the last 50 links in RSS 2.0 format.
866 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
868 // $usepermalink : If true, use permalink instead of final link.
869 // User just has to add 'permalink' in URL parameters. eg. http://mysite.com/shaarli/?do=rss&permalinks
870 $usepermalinks = isset ( $_GET [ 'permalinks' ]);
873 $query = $_SERVER [ "QUERY_STRING" ];
874 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=rss' ) && ! isLoggedIn ());
875 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
877 // If cached was not found (or not usable), then read the database and build the response:
878 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
880 // Optionnaly filter the results:
881 $linksToDisplay = array ();
882 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
883 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
884 else $linksToDisplay = $LINKSDB ;
886 $pageaddr = htmlspecialchars ( indexUrl ());
887 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">' ;
888 echo '<channel><title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title><link>' . $pageaddr . '</link>' ;
889 echo '<description>Shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n\n " ;
890 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
892 echo '<!-- PubSubHubbub Discovery -->' ;
893 echo '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" xmlns="http://www.w3.org/2005/Atom" />' ;
894 echo '<link rel="self" href="' . htmlspecialchars ( $pageaddr ). '?do=rss" xmlns="http://www.w3.org/2005/Atom" />' ;
895 echo '<!-- End Of PubSubHubbub Discovery -->' ;
898 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
899 while ( $i < 50 && $i < count ( $keys ))
901 $link = $linksToDisplay [ $keys [ $i ]];
902 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
903 $rfc822date = linkdate2rfc822 ( $link [ 'linkdate' ]);
904 $absurl = htmlspecialchars ( $link [ 'url' ]);
905 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
906 if ( $usepermalinks === true )
907 echo '<item><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><guid>' . $guid . '</guid><link>' . $guid . '</link>' ;
909 echo '<item><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><guid>' . $guid . '</guid><link>' . $absurl . '</link>' ;
910 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) echo '<pubDate>' . htmlspecialchars ( $rfc822date ). "</pubDate> \n " ;
911 if ( $link [ 'tags' ]!= '' ) // Adding tags to each RSS entry (as mentioned in RSS specification)
913 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag ) { echo '<category domain="' . htmlspecialchars ( $pageaddr
). '">' . htmlspecialchars ( $tag
). '</category>' . " \n " ; }
916 // Add permalink in description
917 $descriptionlink = '(<a href="' . $guid . '">Permalink</a>)' ;
918 // If user wants permalinks first, put the final link in description
919 if ( $usepermalinks === true ) $descriptionlink = '(<a href="' . $absurl . '">Link</a>)' ;
920 if ( strlen ( $link [ 'description' ])> 0 ) $descriptionlink = '<br>' . $descriptionlink ;
921 echo '<description><![CDATA[' . nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ])))). $descriptionlink . ']]></description>' . " \n </item> \n " ;
924 echo '</channel></rss>' ;
926 $cache- > cache ( ob_get_contents ());
931 // ------------------------------------------------------------------------------------------
932 // Ouput the last 50 links in ATOM format.
935 header ( 'Content-Type: application/atom+xml; charset=utf-8' );
937 // $usepermalink : If true, use permalink instead of final link.
938 // User just has to add 'permalink' in URL parameters. eg. http://mysite.com/shaarli/?do=atom&permalinks
939 $usepermalinks = isset ( $_GET [ 'permalinks' ]);
942 $query = $_SERVER [ "QUERY_STRING" ];
943 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=atom' ) && ! isLoggedIn ());
944 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
945 // If cached was not found (or not usable), then read the database and build the response:
947 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
950 // Optionnaly filter the results:
951 $linksToDisplay = array ();
952 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
953 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
954 else $linksToDisplay = $LINKSDB ;
956 $pageaddr = htmlspecialchars ( indexUrl ());
960 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
961 while ( $i < 50 && $i < count ( $keys ))
963 $link = $linksToDisplay [ $keys [ $i ]];
964 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
965 $iso8601date = linkdate2iso8601 ( $link [ 'linkdate' ]);
966 $latestDate = max ( $latestDate , $iso8601date );
967 $absurl = htmlspecialchars ( $link [ 'url' ]);
968 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
969 $entries .= '<entry><title>' . htmlspecialchars ( $link [ 'title' ]). '</title>' ;
970 if ( $usepermalinks === true )
971 $entries .= '<link href="' . $guid . '" /><id>' . $guid . '</id>' ;
973 $entries .= '<link href="' . $absurl . '" /><id>' . $guid . '</id>' ;
974 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $entries .= '<updated>' . htmlspecialchars ( $iso8601date ). '</updated>' ;
976 // Add permalink in description
977 $descriptionlink = htmlspecialchars ( '(<a href="' . $guid . '">Permalink</a>)' );
978 // If user wants permalinks first, put the final link in description
979 if ( $usepermalinks === true ) $descriptionlink = htmlspecialchars ( '(<a href="' . $absurl . '">Link</a>)' );
980 if ( strlen ( $link [ 'description' ])> 0 ) $descriptionlink = '<br>' . $descriptionlink ;
982 $entries .= '<content type="html">' . htmlspecialchars ( nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))))). $descriptionlink . "</content> \n " ;
983 if ( $link [ 'tags' ]!= '' ) // Adding tags to each ATOM entry (as mentioned in ATOM specification)
985 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
986 { $entries
.= '<category scheme="' . htmlspecialchars ( $pageaddr
, ENT_QUOTES
). '" term="' . htmlspecialchars ( $tag
, ENT_QUOTES
). '" />' . " \n " ; }
988 $entries .= "</entry> \n " ;
991 $feed = '<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">' ;
992 $feed .= '<title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title>' ;
993 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $feed .= '<updated>' . htmlspecialchars ( $latestDate ). '</updated>' ;
994 $feed .= '<link rel="self" href="' . htmlspecialchars ( serverUrl (). $_SERVER [ "REQUEST_URI" ]). '" />' ;
995 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
997 $feed .= '<!-- PubSubHubbub Discovery -->' ;
998 $feed .= '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" />' ;
999 $feed .= '<!-- End Of PubSubHubbub Discovery -->' ;
1001 $feed .= '<author><name>' . htmlspecialchars ( $pageaddr ). '</name><uri>' . htmlspecialchars ( $pageaddr ). '</uri></author>' ;
1002 $feed .= '<id>' . htmlspecialchars ( $pageaddr ). '</id>' . " \n\n " ; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
1007 $cache- > cache ( ob_get_contents ());
1012 // ------------------------------------------------------------------------------------------
1013 // Daily RSS feed: 1 RSS entry per day giving all the links on that day.
1014 // Gives the last 7 days (which have links).
1015 // This RSS feed cannot be filtered.
1016 function showDailyRSS ()
1019 $query = $_SERVER [ "QUERY_STRING" ];
1020 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=dailyrss' ) && ! isLoggedIn ());
1021 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
1022 // If cached was not found (or not usable), then read the database and build the response:
1023 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1025 /* Some Shaarlies may have very few links, so we need to look
1026 back in time (rsort()) until we have enough days ($nb_of_days).
1028 $linkdates = array (); foreach ( $LINKSDB as $linkdate => $value ) { $linkdates
[]= $linkdate
; }
1030 $nb_of_days = 7 ; // We take 7 days.
1033 foreach ( $linkdates as $linkdate )
1035 $day = substr ( $linkdate , 0 , 8 ); // Extract day (without time)
1036 if ( strcmp ( $day , $today )< 0 )
1038 if ( empty ( $days [ $day ])) $days [ $day ]= array ();
1039 $days [ $day ][]= $linkdate ;
1041 if ( count ( $days )> $nb_of_days ) break ; // Have we collected enough days ?
1044 // Build the RSS feed.
1045 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
1046 $pageaddr = htmlspecialchars ( indexUrl ());
1047 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">' ;
1048 echo '<channel><title>Daily - ' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title><link>' . $pageaddr . '</link>' ;
1049 echo '<description>Daily shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n " ;
1051 foreach ( $days as $day => $linkdates ) // For each day.
1053 $daydate = utf8_encode ( strftime ( '%A %d, %B %Y' , linkdate2timestamp ( $day . '_000000' ))); // Full text date
1054 $rfc822date = linkdate2rfc822 ( $day . '_000000' );
1055 $absurl = htmlspecialchars ( indexUrl (). '?do=daily&day=' . $day ); // Absolute URL of the corresponding "Daily" page.
1056 echo '<item><title>' . htmlspecialchars ( $GLOBALS [ 'title' ]. ' - ' . $daydate ). '</title><guid>' . $absurl . '</guid><link>' . $absurl . '</link>' ;
1057 echo '<pubDate>' . htmlspecialchars ( $rfc822date ). "</pubDate>" ;
1059 // Build the HTML body of this RSS entry.
1063 // We pre-format some fields for proper output.
1064 foreach ( $linkdates as $linkdate )
1066 $l = $LINKSDB [ $linkdate ];
1067 $l [ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $l [ 'description' ]))));
1068 $l [ 'thumbnail' ] = thumbnail ( $l [ 'url' ]);
1069 $l [ 'localdate' ]= linkdate2locale ( $l [ 'linkdate' ]);
1070 if ( startsWith ( $l [ 'url' ], '?' )) $l [ 'url' ]= indexUrl (). $l [ 'url' ]; // make permalink URL absolute
1071 $links [ $linkdate ]= $l ;
1073 // Then build the HTML for this day:
1075 $tpl- > assign ( 'links' , $links );
1076 $html = $tpl- > draw ( 'dailyrss' , $return_string = true );
1078 echo '<description><![CDATA[' . $html . ']]></description>' . " \n </item> \n\n " ;
1081 echo '</channel></rss>' ;
1083 $cache- > cache ( ob_get_contents ());
1089 function showDaily ()
1091 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1094 $day = Date ( 'Ymd' , strtotime ( '-1 day' )); // Yesterday, in format YYYYMMDD.
1095 if ( isset ( $_GET [ 'day' ])) $day = $_GET [ 'day' ];
1097 $days = $LINKSDB- > days ();
1098 $i = array_search ( $day , $days );
1099 if ( $i == false ) { $i
= count ( $days
)- 1 ; $day
= $days
[ $i
]; }
1104 if ( $i > 1 ) $previousday = $days [ $i-1 ];
1105 if ( $i < count ( $days )- 1 ) $nextday = $days [ $i +
1 ];
1108 $linksToDisplay = $LINKSDB- > filterDay ( $day );
1109 // We pre-format some fields for proper output.
1110 foreach ( $linksToDisplay as $key => $link )
1112 $linksToDisplay [ $key ][ 'taglist' ]= explode ( ' ' , $link [ 'tags' ]);
1113 $linksToDisplay [ $key ][ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))));
1114 $linksToDisplay [ $key ][ 'thumbnail' ] = thumbnail ( $link [ 'url' ]);
1117 /* We need to spread the articles on 3 columns.
1118 I did not want to use a javascript lib like http://masonry.desandro.com/
1119 so I manually spread entries with a simple method: I roughly evaluate the
1120 height of a div according to title and description length.
1122 $columns = array ( array (), array (), array ()); // Entries to display, for each column.
1123 $fill = array ( 0 , 0 , 0 ); // Rough estimate of columns fill.
1124 foreach ( $linksToDisplay as $key => $link )
1126 // Roughly estimate length of entry (by counting characters)
1127 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1128 // Description: 836 characters gives roughly 342 pixel height.
1129 // This is not perfect, but it's usually ok.
1130 $length = strlen ( $link [ 'title' ]) +
( 342 * strlen ( $link [ 'description' ]))/ 836 ;
1131 if ( $link [ 'thumbnail' ]) $length +
= 100 ; // 1 thumbnails roughly takes 100 pixels height.
1132 // Then put in column which is the less filled:
1133 $smallest = min ( $fill ); // find smallest value in array.
1134 $index = array_search ( $smallest , $fill ); // find index of this smallest value.
1135 array_push ( $columns [ $index ], $link ); // Put entry in this column.
1136 $fill [ $index ] +
= $length ;
1138 $PAGE = new pageBuilder
;
1139 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1140 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1141 $PAGE- > assign ( 'col1' , $columns [ 0 ]);
1142 $PAGE- > assign ( 'col1' , $columns [ 0 ]);
1143 $PAGE- > assign ( 'col2' , $columns [ 1 ]);
1144 $PAGE- > assign ( 'col3' , $columns [ 2 ]);
1145 $PAGE- > assign ( 'day' , utf8_encode ( strftime ( '%A %d, %B %Y' , linkdate2timestamp ( $day . '_000000' ))));
1146 $PAGE- > assign ( 'previousday' , $previousday );
1147 $PAGE- > assign ( 'nextday' , $nextday );
1148 $PAGE- > renderPage ( 'daily' );
1153 // ------------------------------------------------------------------------------------------
1154 // Render HTML page (according to URL parameters and user rights)
1155 function renderPage ()
1157 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1159 // -------- Display login form.
1160 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=login' ))
1162 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) { header ( 'Location: ?' ); exit ; } // No need to login for open Shaarli
1163 $token = '' ; if ( ban_canLogin ()) $token = getToken (); // Do not waste token generation if not useful.
1164 $PAGE = new pageBuilder
;
1165 $PAGE- > assign ( 'token' , $token );
1166 $PAGE- > assign ( 'returnurl' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ]: '' ));
1167 $PAGE- > renderPage ( 'loginform' );
1170 // -------- User wants to logout.
1171 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=logout' ))
1175 header ( 'Location: ?' );
1179 // -------- Picture wall
1180 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=picwall' ))
1182 // Optionnaly filter the results:
1184 if (! empty ( $_GET [ 'searchterm' ])) $links = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
1185 elseif (! empty ( $_GET [ 'searchtags' ])) $links = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1186 else $links = $LINKSDB ;
1188 $linksToDisplay = array ();
1190 // Get only links which have a thumbnail.
1191 foreach ( $links as $link )
1193 $permalink = '?' . htmlspecialchars ( smallhash ( $link [ 'linkdate' ]), ENT_QUOTES
);
1194 $thumb = lazyThumbnail ( $link [ 'url' ], $permalink );
1195 if ( $thumb != '' ) // Only output links which have a thumbnail.
1197 $link [ 'thumbnail' ]= $thumb ; // Thumbnail HTML code.
1198 $link [ 'permalink' ]= $permalink ;
1199 $linksToDisplay []= $link ; // Add to array.
1202 $PAGE = new pageBuilder
;
1203 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1204 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1205 $PAGE- > renderPage ( 'picwall' );
1209 // -------- Tag cloud
1210 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tagcloud' ))
1212 $tags = $LINKSDB- > allTags ();
1213 // We sort tags alphabetically, then choose a font size according to count.
1214 // First, find max value.
1215 $maxcount = 0 ; foreach ( $tags as $key => $value ) $maxcount = max ( $maxcount , $value );
1218 foreach ( $tags as $key => $value )
1220 $tagList [ $key ] = array ( 'count' => $value , 'size' => max ( 40 * $value / $maxcount , 8 ));
1222 $PAGE = new pageBuilder
;
1223 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1224 $PAGE- > assign ( 'tags' , $tagList );
1225 $PAGE- > renderPage ( 'tagcloud' );
1229 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1230 if ( isset ( $_GET [ 'addtag' ]))
1232 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1233 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?searchtags=' . urlencode ( $_GET
[ 'addtag' ])); exit ; } // In case browser does not send HTTP_REFERER
1234 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1235 $params [ 'searchtags' ] = ( empty ( $params [ 'searchtags' ]) ? trim ( $_GET [ 'addtag' ]) : trim ( $params [ 'searchtags' ]). ' ' . trim ( $_GET [ 'addtag' ]));
1236 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1237 header ( 'Location: ?' . http_build_query ( $params ));
1241 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1242 if ( isset ( $_GET [ 'removetag' ]))
1244 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1245 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?' ); exit ; } // In case browser does not send HTTP_REFERER
1246 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1247 if ( isset ( $params [ 'searchtags' ]))
1249 $tags = explode ( ' ' , $params [ 'searchtags' ]);
1250 $tags = array_diff ( $tags , array ( $_GET [ 'removetag' ])); // Remove value from array $tags.
1251 if ( count ( $tags )== 0 ) unset ( $params [ 'searchtags' ]); else $params [ 'searchtags' ] = implode ( ' ' , $tags );
1252 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1254 header ( 'Location: ?' . http_build_query ( $params ));
1258 // -------- User wants to change the number of links per page (linksperpage=...)
1259 if ( isset ( $_GET [ 'linksperpage' ]))
1261 if ( is_numeric ( $_GET [ 'linksperpage' ])) { $_SESSION
[ 'LINKS_PER_PAGE' ]= abs ( intval ( $_GET
[ 'linksperpage' ])); }
1262 header ( 'Location: ' .( empty ( $_SERVER [ 'HTTP_REFERER' ])? '?' : $_SERVER [ 'HTTP_REFERER' ]));
1266 // -------- User wants to see only private links (toggle)
1267 if ( isset ( $_GET [ 'privateonly' ]))
1269 if ( empty ( $_SESSION [ 'privateonly' ]))
1271 $_SESSION [ 'privateonly' ]= 1 ; // See only private links
1275 unset ( $_SESSION [ 'privateonly' ]); // See all links
1277 header ( 'Location: ' .( empty ( $_SERVER [ 'HTTP_REFERER' ])? '?' : $_SERVER [ 'HTTP_REFERER' ]));
1281 // -------- Handle other actions allowed for non-logged in users:
1284 // User tries to post new link but is not loggedin:
1285 // Show login screen, then redirect to ?post=...
1286 if ( isset ( $_GET [ 'post' ]))
1288 header ( 'Location: ?do=login&post=' . urlencode ( $_GET [ 'post' ]).(! empty ( $_GET [ 'title' ])? '&title=' . urlencode ( $_GET [ 'title' ]): '' ).(! empty ( $_GET [ 'source' ])? '&source=' . urlencode ( $_GET [ 'source' ]): '' )); // Redirect to login page, then back to post link.
1291 $PAGE = new pageBuilder
;
1292 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1293 $PAGE- > renderPage ( 'linklist' );
1294 exit ; // Never remove this one ! All operations below are reserved for logged in user.
1297 // -------- All other functions are reserved for the registered user:
1299 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1300 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tools' ))
1302 $PAGE = new pageBuilder
;
1303 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1304 $PAGE- > assign ( 'pageabsaddr' , indexUrl ());
1305 $PAGE- > renderPage ( 'tools' );
1309 // -------- User wants to change his/her password.
1310 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changepasswd' ))
1312 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) die ( 'You are not supposed to change a password on an Open Shaarli.' );
1313 if (! empty ( $_POST [ 'setpassword' ]) && ! empty ( $_POST [ 'oldpassword' ]))
1315 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1317 // Make sure old password is correct.
1318 $oldhash = sha1 ( $_POST [ 'oldpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1319 if ( $oldhash != $GLOBALS [ 'hash' ]) { echo '<script language="JavaScript">alert("The old password is not correct.");document.location= \' ?do=changepasswd \' ;</script>' ; exit ; }
1320 // Save new password
1321 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
1322 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1324 echo '<script language="JavaScript">alert("Your password has been changed.");document.location= \' ?do=tools \' ;</script>' ;
1327 else // show the change password form.
1329 $PAGE = new pageBuilder
;
1330 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1331 $PAGE- > assign ( 'token' , getToken ());
1332 $PAGE- > renderPage ( 'changepassword' );
1337 // -------- User wants to change configuration
1338 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=configure' ))
1340 if (! empty ( $_POST [ 'title' ]) )
1342 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1344 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
1345 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
1346 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
1347 $GLOBALS [ 'timezone' ] = $tz ;
1348 $GLOBALS [ 'title' ]= $_POST [ 'title' ];
1349 $GLOBALS [ 'redirector' ]= $_POST [ 'redirector' ];
1350 $GLOBALS [ 'disablesessionprotection' ]=! empty ( $_POST [ 'disablesessionprotection' ]);
1352 echo '<script language="JavaScript">alert("Configuration was saved.");document.location= \' ?do=tools \' ;</script>' ;
1355 else // Show the configuration form.
1357 $PAGE = new pageBuilder
;
1358 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1359 $PAGE- > assign ( 'token' , getToken ());
1360 $PAGE- > assign ( 'title' , htmlspecialchars ( empty ( $GLOBALS [ 'title' ]) ? '' : $GLOBALS [ 'title' ] , ENT_QUOTES
));
1361 $PAGE- > assign ( 'redirector' , htmlspecialchars ( empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ] , ENT_QUOTES
));
1362 list ( $timezone_form , $timezone_js ) = templateTZform ( $GLOBALS [ 'timezone' ]);
1363 $PAGE- > assign ( 'timezone_form' , $timezone_form ); // FIXME: put entire tz form generation in template ?
1364 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1365 $PAGE- > renderPage ( 'configure' );
1370 // -------- User wants to rename a tag or delete it
1371 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changetag' ))
1373 if ( empty ( $_POST [ 'fromtag' ]))
1375 $PAGE = new pageBuilder
;
1376 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1377 $PAGE- > assign ( 'token' , getToken ());
1378 $PAGE- > renderPage ( 'changetag' );
1381 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1384 if (! empty ( $_POST [ 'deletetag' ]) && ! empty ( $_POST [ 'fromtag' ]))
1386 $needle = trim ( $_POST [ 'fromtag' ]);
1387 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1388 foreach ( $linksToAlter as $key => $value )
1390 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1391 unset ( $tags [ array_search ( $needle , $tags )]); // Remove tag.
1392 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1393 $LINKSDB [ $key ]= $value ;
1395 $LINKSDB- > savedb (); // save to disk
1396 echo '<script language="JavaScript">alert("Tag was removed from ' . count ( $linksToAlter ). ' links.");document.location= \' ? \' ;</script>' ;
1401 if (! empty ( $_POST [ 'renametag' ]) && ! empty ( $_POST [ 'fromtag' ]) && ! empty ( $_POST [ 'totag' ]))
1403 $needle = trim ( $_POST [ 'fromtag' ]);
1404 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1405 foreach ( $linksToAlter as $key => $value )
1407 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1408 $tags [ array_search ( $needle , $tags )] = trim ( $_POST [ 'totag' ]); // Remplace tags value.
1409 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1410 $LINKSDB [ $key ]= $value ;
1412 $LINKSDB- > savedb (); // save to disk
1413 echo '<script language="JavaScript">alert("Tag was renamed in ' . count ( $linksToAlter ). ' links.");document.location= \' ?searchtags=' . urlencode ( $_POST [ 'totag' ]). ' \' ;</script>' ;
1418 // -------- User wants to add a link without using the bookmarklet: show form.
1419 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=addlink' ))
1421 $PAGE = new pageBuilder
;
1422 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1423 $PAGE- > renderPage ( 'addlink' );
1427 // -------- User clicked the "Save" button when editing a link: Save link to database.
1428 if ( isset ( $_POST [ 'save_edit' ]))
1430 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1431 $tags = trim ( preg_replace ( '/\s\s+/' , ' ' , $_POST [ 'lf_tags' ])); // Remove multiple spaces.
1432 $linkdate = $_POST [ 'lf_linkdate' ];
1433 $link = array ( 'title' => trim ( $_POST [ 'lf_title' ]), 'url' => trim ( $_POST [ 'lf_url' ]), 'description' => trim ( $_POST [ 'lf_description' ]), 'private' =>( isset ( $_POST [ 'lf_private' ]) ? 1 : 0 ),
1434 'linkdate' => $linkdate , 'tags' => str_replace ( ',' , ' ' , $tags ));
1435 if ( $link [ 'title' ]== '' ) $link [ 'title' ]= $link [ 'url' ]; // If title is empty, use the URL as title.
1436 $LINKSDB [ $linkdate ] = $link ;
1437 $LINKSDB- > savedb (); // save to disk
1440 // If we are called from the bookmarklet, we must close the popup:
1441 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1442 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1443 $returnurl .= '#' . smallHash ( $linkdate ); // Scroll to the link which has been edited.
1444 header ( 'Location: ' . $returnurl ); // After saving the link, redirect to the page the user was on.
1448 // -------- User clicked the "Cancel" button when editing a link.
1449 if ( isset ( $_POST [ 'cancel_edit' ]))
1451 // If we are called from the bookmarklet, we must close the popup;
1452 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1453 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1454 $returnurl .= '#' . smallHash ( $_POST [ 'lf_linkdate' ]); // Scroll to the link which has been edited.
1455 header ( 'Location: ' . $returnurl ); // After canceling, redirect to the page the user was on.
1459 // -------- User clicked the "Delete" button when editing a link : Delete link from database.
1460 if ( isset ( $_POST [ 'delete_link' ]))
1462 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1463 // We do not need to ask for confirmation:
1464 // - confirmation is handled by javascript
1465 // - we are protected from XSRF by the token.
1466 $linkdate = $_POST [ 'lf_linkdate' ];
1467 unset ( $LINKSDB [ $linkdate ]);
1468 $LINKSDB- > savedb (); // save to disk
1470 // If we are called from the bookmarklet, we must close the popup:
1471 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1472 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1473 if ( $returnurl == '?' ) { $returnurl
= ( isset ( $_SERVER
[ 'HTTP_REFERER' ]) ? $_SERVER
[ 'HTTP_REFERER' ] : '?' ); }
1474 header ( 'Location: ' . $returnurl ); // After deleting the link, redirect to the page the user was on.
1478 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1479 if ( isset ( $_GET [ 'edit_link' ]))
1481 $link = $LINKSDB [ $_GET [ 'edit_link' ]]; // Read database
1482 if (! $link ) { header ( 'Location: ?' ); exit ; } // Link not found in database.
1483 $PAGE = new pageBuilder
;
1484 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1485 $PAGE- > assign ( 'link' , $link );
1486 $PAGE- > assign ( 'link_is_new' , false );
1487 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1488 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1489 $PAGE- > renderPage ( 'editlink' );
1493 // -------- User want to post a new link: Display link edit form.
1494 if ( isset ( $_GET [ 'post' ]))
1498 // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
1499 $i = strpos ( $url , '&utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1500 $i = strpos ( $url , '?utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1501 $i = strpos ( $url , '#xtor=RSS-' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1503 $link_is_new = false ;
1504 $link = $LINKSDB- > getLinkFromUrl ( $url ); // Check if URL is not already in database (in this case, we will edit the existing link)
1507 $link_is_new = true ; // This is a new link
1508 $linkdate = strval ( date ( 'Ymd_His' ));
1509 $title = ( empty ( $_GET [ 'title' ]) ? '' : $_GET [ 'title' ] ); // Get title if it was provided in URL (by the bookmarklet).
1510 $description = '' ; $tags = '' ; $private = 0 ;
1511 if (( $url != '' ) && parse_url ( $url , PHP_URL_SCHEME
)== '' ) $url = 'http://' . $url ;
1512 // If this is an HTTP link, we try go get the page to extact the title (otherwise we will to straight to the edit form.)
1513 if ( empty ( $title ) && parse_url ( $url , PHP_URL_SCHEME
)== 'http' )
1515 list ( $status , $headers , $data ) = getHTTP ( $url , 4 ); // Short timeout to keep the application responsive.
1516 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
1517 if ( strpos ( $status , '200 OK' )!== false ) $title = html_entity_decode ( html_extract_title ( $data ), ENT_QUOTES
, 'UTF-8' );
1520 if ( $url == '' ) $url = '?' . smallHash ( $linkdate ); // In case of empty URL, this is just a text (with a link that point to itself)
1521 $link = array ( 'linkdate' => $linkdate , 'title' => $title , 'url' => $url , 'description' => $description , 'tags' => $tags , 'private' => 0 );
1524 $PAGE = new pageBuilder
;
1525 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1526 $PAGE- > assign ( 'link' , $link );
1527 $PAGE- > assign ( 'link_is_new' , $link_is_new );
1528 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1529 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1530 $PAGE- > renderPage ( 'editlink' );
1534 // -------- Export as Netscape Bookmarks HTML file.
1535 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=export' ))
1537 if ( empty ( $_GET [ 'what' ]))
1539 $PAGE = new pageBuilder
;
1540 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1541 $PAGE- > renderPage ( 'export' );
1544 $exportWhat = $_GET [ 'what' ];
1545 if (! array_intersect ( array ( 'all' , 'public' , 'private' ), array ( $exportWhat ))) die ( 'What are you trying to export ???' );
1547 header ( 'Content-Type: text/html; charset=utf-8' );
1548 header ( 'Content-disposition: attachment; filename=bookmarks_' . $exportWhat . '_' . strval ( date ( 'Ymd_His' )). '.html' );
1549 $currentdate = date ( 'Y/m/d H:i:s' );
1551 <!DOCTYPE NETSCAPE-Bookmark-file-1>
1552 <!-- This is an automatically generated file.
1553 It will be read and overwritten.
1555 <!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1556 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1557 <TITLE>Bookmarks</TITLE>
1560 foreach ( $LINKSDB as $link )
1562 if ( $exportWhat == 'all' ||
1563 ( $exportWhat == 'private' && $link [ 'private' ]!= 0 ) ||
1564 ( $exportWhat == 'public' && $link [ 'private' ]== 0 ))
1566 echo '<DT><A HREF="' . htmlspecialchars ( $link [ 'url' ]). '" ADD_DATE="' . linkdate2timestamp ( $link [ 'linkdate' ]). '" PRIVATE="' . $link [ 'private' ]. '"' ;
1567 if ( $link [ 'tags' ]!= '' ) echo ' TAGS="' . htmlspecialchars ( str_replace ( ' ' , ',' , $link [ 'tags' ])). '"' ;
1568 echo '>' . htmlspecialchars ( $link [ 'title' ]). "</A> \n " ;
1569 if ( $link [ 'description' ]!= '' ) echo '<DD>' . htmlspecialchars ( $link [ 'description' ]). " \n " ;
1575 // -------- User is uploading a file for import
1576 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=upload' ))
1578 // If file is too big, some form field may be missing.
1579 if (! isset ( $_POST [ 'token' ]) || (! isset ( $_FILES )) || ( isset ( $_FILES [ 'filetoupload' ][ 'size' ]) && $_FILES [ 'filetoupload' ][ 'size' ]== 0 ))
1581 $returnurl = ( empty ( $_SERVER [ 'HTTP_REFERER' ]) ? '?' : $_SERVER [ 'HTTP_REFERER' ] );
1582 echo '<script language="JavaScript">alert("The file you are trying to upload is probably bigger than what this webserver can accept (' . getMaxFileSize (). ' bytes). Please upload in smaller chunks.");document.location= \' ' . htmlspecialchars ( $returnurl ). ' \' ;</script>' ;
1585 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1590 // -------- Show upload/import dialog:
1591 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=import' ))
1593 $PAGE = new pageBuilder
;
1594 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1595 $PAGE- > assign ( 'token' , getToken ());
1596 $PAGE- > assign ( 'maxfilesize' , getMaxFileSize ());
1597 $PAGE- > renderPage ( 'import' );
1601 // -------- Otherwise, simply display search form and links:
1602 $PAGE = new pageBuilder
;
1603 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1604 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1605 $PAGE- > renderPage ( 'linklist' );
1609 // -----------------------------------------------------------------------------------------------
1610 // Process the import file form.
1611 function importFile ()
1613 if (!( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ])) { die ( 'Not allowed.' ); }
1614 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1615 $filename = $_FILES [ 'filetoupload' ][ 'name' ];
1616 $filesize = $_FILES [ 'filetoupload' ][ 'size' ];
1617 $data = file_get_contents ( $_FILES [ 'filetoupload' ][ 'tmp_name' ]);
1618 $private = ( empty ( $_POST [ 'private' ]) ? 0 : 1 ); // Should the links be imported as private ?
1619 $overwrite = ! empty ( $_POST [ 'overwrite' ]) ; // Should the imported links overwrite existing ones ?
1624 if ( startsWith ( $data , '<!DOCTYPE NETSCAPE-Bookmark-file-1>' )) $type = 'netscape' ; // Netscape bookmark file (aka Firefox).
1626 // Then import the bookmarks.
1627 if ( $type == 'netscape' )
1629 // This is a standard Netscape-style bookmark file.
1630 // This format is supported by all browsers (except IE, of course), also delicious, diigo and others.
1631 foreach ( explode ( '<DT>' , $data ) as $html ) // explode is very fast
1633 $link = array ( 'linkdate' => '' , 'title' => '' , 'url' => '' , 'description' => '' , 'tags' => '' , 'private' => 0 );
1634 $d = explode ( '<DD>' , $html );
1635 if ( startswith ( $d [ 0 ], '<A ' ))
1637 $link [ 'description' ] = ( isset ( $d [ 1 ]) ? html_entity_decode ( trim ( $d [ 1 ]), ENT_QUOTES
, 'UTF-8' ) : '' ); // Get description (optional)
1638 preg_match ( '!<A .*?>(.*?)</A>!i' , $d [ 0 ], $matches ); $link [ 'title' ] = ( isset ( $matches [ 1 ]) ? trim ( $matches [ 1 ]) : '' ); // Get title
1639 $link [ 'title' ] = html_entity_decode ( $link [ 'title' ], ENT_QUOTES
, 'UTF-8' );
1640 preg_match_all ( '! ([A-Z_]+)= \" (.*?)"!i' , $html , $matches , PREG_SET_ORDER
); // Get all other attributes
1642 foreach ( $matches as $m )
1644 $attr = $m [ 1 ]; $value = $m [ 2 ];
1645 if ( $attr == 'HREF' ) $link [ 'url' ]= html_entity_decode ( $value , ENT_QUOTES
, 'UTF-8' );
1646 elseif ( $attr == 'ADD_DATE' ) $raw_add_date = intval ( $value );
1647 elseif ( $attr == 'PRIVATE' ) $link [ 'private' ]=( $value == '0' ? 0 : 1 );
1648 elseif ( $attr == 'TAGS' ) $link [ 'tags' ]= html_entity_decode ( str_replace ( ',' , ' ' , $value ), ENT_QUOTES
, 'UTF-8' );
1650 if ( $link [ 'url' ]!= '' )
1652 if ( $private == 1 ) $link [ 'private' ]= 1 ;
1653 $dblink = $LINKSDB- > getLinkFromUrl ( $link [ 'url' ]); // See if the link is already in database.
1655 { // Link not in database, let's import it...
1656 if ( empty ( $raw_add_date )) $raw_add_date = time (); // In case of shitty bookmark file with no ADD_DATE
1658 // Make sure date/time is not already used by another link.
1659 // (Some bookmark files have several different links with the same ADD_DATE)
1660 // We increment date by 1 second until we find a date which is not used in db.
1661 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1662 while (! empty ( $LINKSDB [ date ( 'Ymd_His' , $raw_add_date )])) { $raw_add_date++
; } // Yes, I know it's ugly.
1663 $link [ 'linkdate' ]= date ( 'Ymd_His' , $raw_add_date );
1664 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1667 else // link already present in database.
1670 { // If overwrite is required, we import link data, except date/time.
1671 $link [ 'linkdate' ]= $dblink [ 'linkdate' ];
1672 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1682 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) was successfully processed: ' . $import_count . ' links imported.");document.location= \' ? \' ;</script>' ;
1686 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) has an unknown file format. Nothing was imported.");document.location= \' ? \' ;</script>' ;
1690 // -----------------------------------------------------------------------------------------------
1691 // Template for the list of links (<div id="linklist">)
1692 // This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1693 function buildLinkList ( $PAGE , $LINKSDB )
1695 // ---- Filter link database according to parameters
1696 $linksToDisplay = array ();
1699 if ( isset ( $_GET [ 'searchterm' ])) // Fulltext search
1701 $linksToDisplay = $LINKSDB- > filterFulltext ( trim ( $_GET [ 'searchterm' ]));
1702 $search_crits = htmlspecialchars ( trim ( $_GET [ 'searchterm' ]));
1703 $search_type = 'fulltext' ;
1705 elseif ( isset ( $_GET [ 'searchtags' ])) // Search by tag
1707 $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1708 $search_crits = explode ( ' ' , trim ( $_GET [ 'searchtags' ]));
1709 $search_type = 'tags' ;
1711 elseif ( isset ( $_SERVER [ 'QUERY_STRING' ]) && preg_match ( '/[a-zA-Z0-9-_@] {6} (&.+?)?/' , $_SERVER [ 'QUERY_STRING' ])) // Detect smallHashes in URL
1713 $linksToDisplay = $LINKSDB- > filterSmallHash ( substr ( trim ( $_SERVER [ "QUERY_STRING" ], '/' ), 0 , 6 ));
1714 if ( count ( $linksToDisplay )== 0 )
1716 header ( $_SERVER [ "SERVER_PROTOCOL" ]. " 404 Not Found" );
1717 echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.' ;
1718 echo '<br>You would mind <a href="?">clicking here</a> ?' ;
1721 $search_type = 'permalink' ;
1724 $linksToDisplay = $LINKSDB ; // otherwise, display without filtering.
1726 // Option: Show only private links
1727 if (! empty ( $_SESSION [ 'privateonly' ]))
1730 foreach ( $linksToDisplay as $linkdate => $link )
1732 if ( $link [ 'private' ]!= 0 ) $tmp [ $linkdate ]= $link ;
1734 $linksToDisplay = $tmp ;
1737 // ---- Handle paging.
1738 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess ???
1739 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1740 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1742 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // Stupid and ugly. Thanks php.
1744 // If there is only a single link, we change on-the-fly the title of the page.
1745 if ( count ( $linksToDisplay )== 1 ) $GLOBALS [ 'pagetitle' ] = $linksToDisplay [ $keys [ 0 ]][ 'title' ]. ' - ' . $GLOBALS [ 'title' ];
1747 // Select articles according to paging.
1748 $pagecount = ceil ( count ( $keys )/ $_SESSION [ 'LINKS_PER_PAGE' ]);
1749 $pagecount = ( $pagecount == 0 ? 1 : $pagecount );
1750 $page =( empty ( $_GET [ 'page' ]) ? 1 : intval ( $_GET [ 'page' ]));
1751 $page = ( $page < 1 ? 1 : $page );
1752 $page = ( $page > $pagecount ? $pagecount : $page );
1753 $i = ( $page-1 )* $_SESSION [ 'LINKS_PER_PAGE' ]; // Start index.
1754 $end = $i +
$_SESSION [ 'LINKS_PER_PAGE' ];
1755 $linkDisp = array (); // Links to display
1756 while ( $i < $end && $i < count ( $keys ))
1758 $link = $linksToDisplay [ $keys [ $i ]];
1759 $link [ 'description' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))));
1760 $title = $link [ 'title' ];
1761 $classLi = $i %
2 != 0 ? '' : 'publicLinkHightLight' ;
1762 $link [ 'class' ] = ( $link [ 'private' ]== 0 ? $classLi : 'private' );
1763 $link [ 'localdate' ]= linkdate2locale ( $link [ 'linkdate' ]);
1764 $link [ 'taglist' ]= explode ( ' ' , $link [ 'tags' ]);
1765 $linkDisp [ $keys [ $i ]] = $link ;
1769 // Compute paging navigation
1770 $searchterm = ( empty ( $_GET [ 'searchterm' ]) ? '' : '&searchterm=' . $_GET [ 'searchterm' ] );
1771 $searchtags = ( empty ( $_GET [ 'searchtags' ]) ? '' : '&searchtags=' . $_GET [ 'searchtags' ] );
1773 $previous_page_url = '' ; if ( $i != count ( $keys )) $previous_page_url = '?page=' .( $page +
1 ). $searchterm . $searchtags ;
1774 $next_page_url = '' ; if ( $page > 1 ) $next_page_url = '?page=' .( $page-1 ). $searchterm . $searchtags ;
1776 $token = '' ; if ( isLoggedIn ()) $token = getToken ();
1778 // Fill all template fields.
1779 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1780 $PAGE- > assign ( 'previous_page_url' , $previous_page_url );
1781 $PAGE- > assign ( 'next_page_url' , $next_page_url );
1782 $PAGE- > assign ( 'page_current' , $page );
1783 $PAGE- > assign ( 'page_max' , $pagecount );
1784 $PAGE- > assign ( 'result_count' , count ( $linksToDisplay ));
1785 $PAGE- > assign ( 'search_type' , $search_type );
1786 $PAGE- > assign ( 'search_crits' , $search_crits );
1787 $PAGE- > assign ( 'redirector' , empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ]); // optional redirector URL
1788 $PAGE- > assign ( 'token' , $token );
1789 $PAGE- > assign ( 'links' , $linkDisp );
1793 // Compute the thumbnail for a link.
1795 // with a link to the original URL.
1796 // Understands various services (youtube.com...)
1797 // Input: $url = url for which the thumbnail must be found.
1798 // $href = if provided, this URL will be followed instead of $url
1799 // Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1800 // Some of them may be missing.
1801 // Return an empty array if no thumbnail available.
1802 function computeThumbnail ( $url , $href = false )
1804 if (! $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ]) return array ();
1805 if ( $href == false ) $href = $url ;
1807 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1808 // (eg. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1809 // ^^^^^^^^^^^ ^^^^^^^^^^^
1810 $domain = parse_url ( $url , PHP_URL_HOST
);
1811 if ( $domain == 'youtube.com' || $domain == 'www.youtube.com' )
1813 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract video ID and get thumbnail
1814 if (! empty ( $params [ 'v' ])) return array ( 'src' => 'http://img.youtube.com/vi/' . $params [ 'v' ]. '/default.jpg' ,
1815 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1817 if ( $domain == 'youtu.be' ) // Youtube short links
1819 $path = parse_url ( $url , PHP_URL_PATH
);
1820 return array ( 'src' => 'http://img.youtube.com/vi' . $path . '/default.jpg' ,
1821 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1823 if ( $domain == 'pix.toile-libre.org' ) // pix.toile-libre.org image hosting
1825 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract image filename.
1826 if (! empty ( $params ) && ! empty ( $params [ 'img' ])) return array ( 'src' => 'http://pix.toile-libre.org/upload/thumb/' . urlencode ( $params [ 'img' ]),
1827 'href' => $href , 'style' => 'max-width:120px; max-height:150px' , 'alt' => 'pix.toile-libre.org thumbnail' );
1830 if ( $domain == 'imgur.com' )
1832 $path = parse_url ( $url , PHP_URL_PATH
);
1833 if ( startsWith ( $path , '/a/' )) return array (); // Thumbnails for albums are not available.
1834 if ( startsWith ( $path , '/r/' )) return array ( 'src' => 'http://i.imgur.com/' . basename ( $path ). 's.jpg' ,
1835 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1836 if ( startsWith ( $path , '/gallery/' )) return array ( 'src' => 'http://i.imgur.com' . substr ( $path , 8 ). 's.jpg' ,
1837 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1839 if ( substr_count ( $path , '/' )== 1 ) return array ( 'src' => 'http://i.imgur.com/' . substr ( $path , 1 ). 's.jpg' ,
1840 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1842 if ( $domain == 'i.imgur.com' )
1844 $pi = pathinfo ( parse_url ( $url , PHP_URL_PATH
));
1845 if (! empty ( $pi [ 'filename' ])) return array ( 'src' => 'http://i.imgur.com/' . $pi [ 'filename' ]. 's.jpg' ,
1846 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1848 if ( $domain == 'dailymotion.com' || $domain == 'www.dailymotion.com' )
1850 if ( strpos ( $url , 'dailymotion.com/video/' )!== false )
1852 $thumburl = str_replace ( 'dailymotion.com/video/' , 'dailymotion.com/thumbnail/video/' , $url );
1853 return array ( 'src' => $thumburl ,
1854 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'DailyMotion thumbnail' );
1857 if ( endsWith ( $domain , '.imageshack.us' ))
1859 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1860 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1862 $thumburl = substr ( $url , 0 , strlen ( $url )- strlen ( $ext )). 'th.' . $ext ;
1863 return array ( 'src' => $thumburl ,
1864 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'imageshack.us thumbnail' );
1868 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1869 // So we deport the thumbnail generation in order not to slow down page generation
1870 // (and we also cache the thumbnail)
1872 if (! $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ]) return array (); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1874 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' )
1875 || $domain == 'vimeo.com'
1876 || $domain == 'ted.com' || endsWith ( $domain , '.ted.com' )
1877 || $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' )
1880 if ( $domain == 'vimeo.com' )
1881 { // Make sure this vimeo url points to a video (/xxx... where xxx is numeric)
1882 $path = parse_url ( $url , PHP_URL_PATH
);
1883 if (! preg_match ( '!/\d+.+?!' , $path )) return array (); // This is not a single video URL.
1885 if ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
1886 { // Make sure this url points to a single comic (/xxx... where xxx is numeric)
1887 $path = parse_url ( $url , PHP_URL_PATH
);
1888 if (! preg_match ( '!/\d+.+?!' , $path )) return array ();
1890 if ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
1891 { // Make sure this TED url points to a video (/talks/...)
1892 $path = parse_url ( $url , PHP_URL_PATH
);
1893 if ( "/talks/" !== substr ( $path , 0 , 7 )) return array (); // This is not a single video URL.
1895 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1896 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ),
1897 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1900 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1901 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1902 // But using the extension will do.
1903 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1904 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1906 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1907 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ),
1908 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1910 return array (); // No thumbnail.
1915 // Returns the HTML code to display a thumbnail for a link
1916 // with a link to the original URL.
1917 // Understands various services (youtube.com...)
1918 // Input: $url = url for which the thumbnail must be found.
1919 // $href = if provided, this URL will be followed instead of $url
1920 // Returns '' if no thumbnail available.
1921 function thumbnail ( $url , $href = false )
1923 $t = computeThumbnail ( $url , $href );
1924 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1926 $html = '<a href="' . htmlspecialchars ( $t [ 'href' ]). '"><img src="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1927 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1928 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1929 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1930 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1936 // Returns the HTML code to display a thumbnail for a link
1937 // for the picture wall (using lazy image loading)
1938 // Understands various services (youtube.com...)
1939 // Input: $url = url for which the thumbnail must be found.
1940 // $href = if provided, this URL will be followed instead of $url
1941 // Returns '' if no thumbnail available.
1942 function lazyThumbnail ( $url , $href = false )
1944 $t = computeThumbnail ( $url , $href );
1945 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1947 $html = '<a href="' . htmlspecialchars ( $t [ 'href' ]). '">' ;
1949 // Lazy image (only loaded by javascript when in the viewport).
1950 $html .= '<img class="lazyimage" src="#" data-original="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1951 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1952 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1953 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1954 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1957 // No-javascript fallback:
1958 $html .= '<noscript><img src="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1959 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1960 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1961 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1962 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1963 $html .= '></noscript></a>' ;
1969 // -----------------------------------------------------------------------------------------------
1971 // This function should NEVER be called if the file data/config.php exists.
1974 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1975 if ( endsWith ( $_SERVER [ 'SERVER_NAME' ], '.free.fr' ) && ! is_dir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' )) mkdir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' , 0705 );
1978 // This part makes sure sessions works correctly.
1979 // (Because on some hosts, session.save_path may not be set correctly,
1980 // or we may not have write access to it.)
1981 if ( isset ( $_GET [ 'test_session' ]) && ( ! isset ( $_SESSION ) || ! isset ( $_SESSION [ 'session_tested' ]) || $_SESSION [ 'session_tested' ]!= 'Working' ))
1982 { // Step 2: Check if data in session is correct.
1983 echo '<pre>Sessions do not seem to work correctly on your server.<br>' ;
1984 echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>' ;
1985 echo 'It currently points to ' . session_save_path (). '<br><br><a href="?">Click to try again.</a></pre>' ;
1988 if (! isset ( $_SESSION [ 'session_tested' ]))
1989 { // Step 1 : Try to store data in session and reload page.
1990 $_SESSION [ 'session_tested' ] = 'Working' ; // Try to set a variable in session.
1991 header ( 'Location: ' . indexUrl (). '?test_session' ); // Redirect to check stored data.
1993 if ( isset ( $_GET [ 'test_session' ]))
1994 { // Step 3: Sessions are ok. Remove test parameter from URL.
1995 header ( 'Location: ' . indexUrl ());
1999 if (! empty ( $_POST [ 'setlogin' ]) && ! empty ( $_POST [ 'setpassword' ]))
2002 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
2003 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
2004 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
2005 $GLOBALS [ 'timezone' ] = $tz ;
2006 // Everything is ok, let's create config file.
2007 $GLOBALS [ 'login' ] = $_POST [ 'setlogin' ];
2008 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
2009 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
2010 $GLOBALS [ 'title' ] = ( empty ( $_POST [ 'title' ]) ? 'Shared links on ' . htmlspecialchars ( indexUrl ()) : $_POST [ 'title' ] );
2012 echo '<script language="JavaScript">alert("Shaarli is now configured. Please enter your login/password and start shaaring your links !");document.location= \' ?do=login \' ;</script>' ;
2016 // Display config form:
2017 list ( $timezone_form , $timezone_js ) = templateTZform ();
2018 $timezone_html = '' ; if ( $timezone_form != '' ) $timezone_html = '<tr><td valign="top"><b>Timezone:</b></td><td>' . $timezone_form . '</td></tr>' ;
2020 $PAGE = new pageBuilder
;
2021 $PAGE- > assign ( 'timezone_html' , $timezone_html );
2022 $PAGE- > assign ( 'timezone_js' , $timezone_js );
2023 $PAGE- > renderPage ( 'install' );
2027 // Generates the timezone selection form and javascript.
2028 // Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
2029 // Output: array(html,js)
2030 // Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
2031 // Returns array('','') if server does not support timezones list. (eg. php 5.1 on free.fr)
2032 function templateTZform ( $ptz = false )
2034 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
2036 // Try to split the provided timezone.
2037 if ( $ptz == false ) { $l
= timezone_identifiers_list (); $ptz
= $l
[ 0 ]; }
2038 $spos = strpos ( $ptz , '/' ); $pcontinent = substr ( $ptz , 0 , $spos ); $pcity = substr ( $ptz , $spos +
1 );
2040 // Display config form:
2041 $timezone_form = '' ;
2043 // The list is in the forme "Europe/Paris", "America/Argentina/Buenos_Aires"...
2044 // We split the list in continents/cities.
2045 $continents = array ();
2047 foreach ( timezone_identifiers_list () as $tz )
2049 if ( $tz == 'UTC' ) $tz = 'UTC/UTC' ;
2050 $spos = strpos ( $tz , '/' );
2053 $continent = substr ( $tz , 0 , $spos ); $city = substr ( $tz , $spos +
1 );
2054 $continents [ $continent ]= 1 ;
2055 if (! isset ( $cities [ $continent ])) $cities [ $continent ]= '' ;
2056 $cities [ $continent ].= '<option value="' . $city . '"' .( $pcity == $city ? 'selected' : '' ). '>' . $city . '</option>' ;
2059 $continents_html = '' ;
2060 $continents = array_keys ( $continents );
2061 foreach ( $continents as $continent )
2062 $continents_html .= '<option value="' . $continent . '"' .( $pcontinent == $continent ? 'selected' : '' ). '>' . $continent . '</option>' ;
2063 $cities_html = $cities [ $pcontinent ];
2064 $timezone_form = "Continent: <select name= \" continent \" id= \" continent \" onChange= \" onChangecontinent(); \" > ${continents_html} </select><br /><br />" ;
2065 $timezone_form .= "City: <select name= \" city \" id= \" city \" > ${cities[$pcontinent]} </select><br /><br />" ;
2066 $timezone_js = "<script language= \" JavaScript \" >" ;
2067 $timezone_js .= "function onChangecontinent() {document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];} " ;
2068 $timezone_js .= "var citiescontinent = " . json_encode ( $cities ). ";" ;
2069 $timezone_js .= "</script>" ;
2070 return array ( $timezone_form , $timezone_js );
2072 return array ( '' , '' );
2075 // Tells if a timezone is valid or not.
2076 // If not valid, returns false.
2077 // If system does not support timezone list, returns false.
2078 function isTZvalid ( $continent , $city )
2080 $tz = $continent . '/' . $city ;
2081 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
2083 if ( in_array ( $tz , timezone_identifiers_list ())) // it's a valid timezone ?
2090 // Webservices (for use with jQuery/jQueryUI)
2091 // eg. index.php?ws=tags&term=minecr
2092 function processWS ()
2094 if ( empty ( $_GET [ 'ws' ]) || empty ( $_GET [ 'term' ])) return ;
2095 $term = $_GET [ 'term' ];
2096 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
2097 header ( 'Content-Type: application/json; charset=utf-8' );
2099 // Search in tags (case insentitive, cumulative search)
2100 if ( $_GET [ 'ws' ]== 'tags' )
2102 $tags = explode ( ' ' , str_replace ( ',' , ' ' , $term )); $last = array_pop ( $tags ); // Get the last term ("a b c d" ==> "a b c", "d")
2103 $addtags = '' ; if ( $tags ) $addtags = implode ( ' ' , $tags ). ' ' ; // We will pre-pend previous tags
2105 /* To speed up things, we store list of tags in session */
2106 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
2107 foreach ( $_SESSION [ 'tags' ] as $key => $value )
2109 if ( startsWith ( $key , $last , $case = false ) && ! in_array ( $key , $tags )) $suggested [ $addtags . $key . ' ' ]= 0 ;
2111 echo json_encode ( array_keys ( $suggested ));
2115 // Search a single tag (case sentitive, single tag search)
2116 if ( $_GET [ 'ws' ]== 'singletag' )
2118 /* To speed up things, we store list of tags in session */
2119 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
2120 foreach ( $_SESSION [ 'tags' ] as $key => $value )
2122 if ( startsWith ( $key , $term , $case = true )) $suggested [ $key ]= 0 ;
2124 echo json_encode ( array_keys ( $suggested ));
2129 // Re-write configuration file according to globals.
2130 // Requires some $GLOBALS to be set (login,hash,salt,title).
2131 // If the config file cannot be saved, an error message is dislayed and the user is redirected to "Tools" menu.
2132 // (otherwise, the function simply returns.)
2133 function writeConfig ()
2135 if ( is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]) && ! isLoggedIn ()) die ( 'You are not authorized to alter config.' ); // Only logged in user can alter config.
2136 if ( empty ( $GLOBALS [ 'redirector' ])) $GLOBALS [ 'redirector' ]= '' ;
2137 if ( empty ( $GLOBALS [ 'disablesessionprotection' ])) $GLOBALS [ 'disablesessionprotection' ]= false ;
2138 $config = '<?php $GLOBALS [ \' login \' ]=' . var_export ( $GLOBALS [ 'login' ], true ). '; $GLOBALS [ \' hash \' ]=' . var_export ( $GLOBALS [ 'hash' ], true ). '; $GLOBALS [ \' salt \' ]=' . var_export ( $GLOBALS [ 'salt' ], true ). '; ' ;
2139 $config .= ' $GLOBALS [ \' timezone \' ]=' . var_export ( $GLOBALS [ 'timezone' ], true ). '; date_default_timezone_set(' . var_export ( $GLOBALS [ 'timezone' ], true ). '); $GLOBALS [ \' title \' ]=' . var_export ( $GLOBALS [ 'title' ], true ). ';' ;
2140 $config .= ' $GLOBALS [ \' redirector \' ]=' . var_export ( $GLOBALS [ 'redirector' ], true ). '; ' ;
2141 $config .= ' $GLOBALS [ \' disablesessionprotection \' ]=' . var_export ( $GLOBALS [ 'disablesessionprotection' ], true ). '; ' ;
2143 if (! file_put_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ], $config ) || strcmp ( file_get_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]), $config )!= 0 )
2145 echo '<script language="JavaScript">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>' ;
2150 /* Because some f*cking services like Flickr require an extra HTTP request to get the thumbnail URL,
2151 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
2152 The following function takes the URL a link (eg. a flickr page) and return the proper thumbnail.
2153 This function is called by passing the url:
2154 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
2155 [URL] is the URL of the link (eg. a flickr page)
2156 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2157 The function below will fetch the image from the webservice and store it in the cache.
2159 function genThumbnail ()
2161 // Make sure the parameters in the URL were generated by us.
2162 $sign = hash_hmac ( 'sha256' , $_GET [ 'url' ], $GLOBALS [ 'salt' ]);
2163 if ( $sign != $_GET [ 'hmac' ]) die ( 'Naughty boy !' );
2165 // Let's see if we don't already have the image for this URL in the cache.
2166 $thumbname = hash ( 'sha1' , $_GET [ 'url' ]). '.jpg' ;
2167 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ))
2168 { // We have the thumbnail, just serve it:
2169 header ( 'Content-Type: image/jpeg' );
2170 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname );
2173 // We may also serve a blank image (if service did not respond)
2174 $blankname = hash ( 'sha1' , $_GET [ 'url' ]). '.gif' ;
2175 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname ))
2177 header ( 'Content-Type: image/gif' );
2178 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname );
2182 // Otherwise, generate the thumbnail.
2183 $url = $_GET [ 'url' ];
2184 $domain = parse_url ( $url , PHP_URL_HOST
);
2186 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' ))
2188 // Crude replacement to handle new Flickr domain policy (They prefer www. now)
2189 $url = str_replace ( 'http://flickr.com/' , 'http://www.flickr.com/' , $url );
2191 // Is this a link to an image, or to a flickr page ?
2193 if ( endswith ( parse_url ( $url , PHP_URL_PATH
), '.jpg' ))
2194 { // This is a direct link to an image. eg. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
2195 preg_match ( '!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!' , $url , $matches );
2196 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ]. 'm.jpg' ;
2198 else // this is a flickr page (html)
2200 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 20 ); // Get the flickr html page.
2201 if ( strpos ( $httpstatus , '200 OK' )!== false )
2203 // Flickr now nicely provides the URL of the thumbnail in each flickr page.
2204 preg_match ( '!<link rel= \" image_src \" href= \" (.+?) \" !' , $data , $matches );
2205 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2207 // In albums (and some other pages), the link rel="image_src" is not provided,
2208 // but flickr provides:
2209 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2212 preg_match ( '!<meta property= \" og:image \" content= \" (.+?) \" !' , $data , $matches );
2213 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2219 { // Let's download the image.
2220 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 ); // Image is 240x120, so 10 seconds to download should be enough.
2221 if ( strpos ( $httpstatus , '200 OK' )!== false )
2223 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2224 header ( 'Content-Type: image/jpeg' );
2231 elseif ( $domain == 'vimeo.com' )
2233 // This is more complex: we have to perform a HTTP request, then parse the result.
2234 // Maybe we should deport this to javascript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2235 $vid = substr ( parse_url ( $url , PHP_URL_PATH
), 1 );
2236 list ( $httpstatus , $headers , $data ) = getHTTP ( 'http://vimeo.com/api/v2/video/' . htmlspecialchars ( $vid ). '.php' , 5 );
2237 if ( strpos ( $httpstatus , '200 OK' )!== false )
2239 $t = unserialize ( $data );
2240 $imageurl = $t [ 0 ][ 'thumbnail_medium' ];
2241 // Then we download the image and serve it to our client.
2242 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 );
2243 if ( strpos ( $httpstatus , '200 OK' )!== false )
2245 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2246 header ( 'Content-Type: image/jpeg' );
2253 elseif ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
2255 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2256 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2257 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2258 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2259 if ( strpos ( $httpstatus , '200 OK' )!== false )
2261 // Extract the link to the thumbnail
2262 preg_match ( '!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!' , $data , $matches );
2263 if (! empty ( $matches [ 1 ]))
2264 { // Let's download the image.
2265 $imageurl = $matches [ 1 ];
2266 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2267 if ( strpos ( $httpstatus , '200 OK' )!== false )
2269 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2270 file_put_contents ( $filepath , $data ); // Save image to cache.
2271 if ( resizeImage ( $filepath ))
2273 header ( 'Content-Type: image/jpeg' );
2274 echo file_get_contents ( $filepath );
2282 elseif ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
2284 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2285 // http://xkcd.com/327/
2286 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2287 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2288 if ( strpos ( $httpstatus , '200 OK' )!== false )
2290 // Extract the link to the thumbnail
2291 preg_match ( '!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!' , $data , $matches );
2292 if (! empty ( $matches [ 1 ]))
2293 { // Let's download the image.
2294 $imageurl = $matches [ 1 ];
2295 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2296 if ( strpos ( $httpstatus , '200 OK' )!== false )
2298 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2299 file_put_contents ( $filepath , $data ); // Save image to cache.
2300 if ( resizeImage ( $filepath ))
2302 header ( 'Content-Type: image/jpeg' );
2303 echo file_get_contents ( $filepath );
2313 // For all other domains, we try to download the image and make a thumbnail.
2314 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 30 ); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2315 if ( strpos ( $httpstatus , '200 OK' )!== false )
2317 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2318 file_put_contents ( $filepath , $data ); // Save image to cache.
2319 if ( resizeImage ( $filepath ))
2321 header ( 'Content-Type: image/jpeg' );
2322 echo file_get_contents ( $filepath );
2329 // Otherwise, return an empty image (8x8 transparent gif)
2330 $blankgif = base64_decode ( 'R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7' );
2331 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname , $blankgif ); // Also put something in cache so that this URL is not requested twice.
2332 header ( 'Content-Type: image/gif' );
2336 // Make a thumbnail of the image (to width: 120 pixels)
2337 // Returns true if success, false otherwise.
2338 function resizeImage ( $filepath )
2340 if (! function_exists ( 'imagecreatefromjpeg' )) return false ; // GD not present: no thumbnail possible.
2342 // Trick: some stupid people rename GIF as JPEG... or else.
2343 // So we really try to open each image type whatever the extension is.
2344 $header = file_get_contents ( $filepath , false , NULL , 0 , 256 ); // Read first 256 bytes and try to sniff file type.
2346 $i = strpos ( $header , 'GIF8' ); if (( $i !== false ) && ( $i == 0 )) $im = imagecreatefromgif ( $filepath ); // Well this is crude, but it should be enough.
2347 $i = strpos ( $header , 'PNG' ); if (( $i !== false ) && ( $i == 1 )) $im = imagecreatefrompng ( $filepath );
2348 $i = strpos ( $header , 'JFIF' ); if ( $i !== false ) $im = imagecreatefromjpeg ( $filepath );
2349 if (! $im ) return false ; // Unable to open image (corrupted or not an image)
2352 $ystart = 0 ; $yheight = $h ;
2353 if ( $h > $w ) { $ystart
= ( $h
/ 2 )-( $w
/ 2 ); $yheight
= $w
/ 2 ; }
2354 $nw = 120 ; // Desired width
2355 $nh = min ( floor (( $h * $nw )/ $w ), 120 ); // Compute new width/height, but maximum 120 pixels height.
2357 $im2 = imagecreatetruecolor ( $nw , $nh );
2358 imagecopyresampled ( $im2 , $im , 0 , 0 , 0 , $ystart , $nw , $nh , $w , $yheight );
2359 imageinterlace ( $im2 , true ); // For progressive JPEG.
2360 $tempname = $filepath . '_TEMP.jpg' ;
2361 imagejpeg ( $im2 , $tempname , 90 );
2365 rename ( $tempname , $filepath ); // Overwrite original picture with thumbnail.
2369 // Invalidate caches when the database is changed or the user logs out.
2370 // (eg. tags cache).
2371 function invalidateCaches ()
2373 unset ( $_SESSION [ 'tags' ]); // Purge cache attached to session.
2374 pageCache
:: purgeCache (); // Purge page cache shared by sessions.
2377 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=genthumbnail' )) { genThumbnail (); exit ; } // Thumbnail generation/cache does not need the link database.
2378 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=rss' )) { showRSS (); exit ; }
2379 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=atom' )) { showATOM (); exit ; }
2380 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=dailyrss' )) { showDailyRSS (); exit ; }
2381 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=daily' )) { showDaily (); exit ; }
2382 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'ws=' )) { processWS (); exit ; } // Webservices (for jQuery/jQueryUI)
2383 if (! isset ( $_SESSION [ 'LINKS_PER_PAGE' ])) $_SESSION [ 'LINKS_PER_PAGE' ]= $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ];