]>
git.immae.eu Git - github/shaarli/Shaarli.git/blob - index.php
0253c19fd0ee8d50409a30caf5b5d7f9fc0d8684
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.
41 ini_set ( 'max_input_time' , '60' ); // High execution time in case of problematic imports/exports.
42 ini_set ( 'memory_limit' , '128M' ); // Try to set max upload file size and read (May not work on some hosts).
43 ini_set ( 'post_max_size' , '16M' );
44 ini_set ( 'upload_max_filesize' , '16M' );
46 error_reporting ( E_ALL^E_WARNING
); // See all error except warnings.
47 //error_reporting(-1); // See all errors (for debugging only)
49 include "inc/rain.tpl.class.php" ; //include Rain TPL
50 raintpl
:: $tpl_dir = "tpl/" ; // template directory
51 if (! is_dir ( 'tmp' )) { mkdir ( 'tmp' , 0705 ); chmod ( 'tmp' , 0705 ); }
52 raintpl
:: $cache_dir = "tmp/" ; // cache directory
54 ob_start (); // Output buffering for the page cache.
57 // In case stupid admin has left magic_quotes enabled in php.ini:
58 if ( get_magic_quotes_gpc ())
60 function stripslashes_deep ( $value ) { $value
= is_array ( $value
) ? array_map ( 'stripslashes_deep' , $value
) : stripslashes ( $value
); return $value
; }
61 $_POST = array_map ( 'stripslashes_deep' , $_POST );
62 $_GET = array_map ( 'stripslashes_deep' , $_GET );
63 $_COOKIE = array_map ( 'stripslashes_deep' , $_COOKIE );
66 // Prevent caching on client side or proxy: (yes, it's ugly)
67 header ( "Last-Modified: " . gmdate ( "D, d M Y H:i:s" ) . " GMT" );
68 header ( "Cache-Control: no-store, no-cache, must-revalidate" );
69 header ( "Cache-Control: post-check=0, pre-check=0" , false );
70 header ( "Pragma: no-cache" );
72 // Directories creations (Note that your web host may require differents rights than 705.)
73 if (! is_dir ( $GLOBALS [ 'config' ][ 'DATADIR' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'DATADIR' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'DATADIR' ], 0705 ); }
74 if (! is_dir ( 'tmp' )) { mkdir ( 'tmp' , 0705 ); chmod ( 'tmp' , 0705 ); } // For RainTPL temporary files.
75 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.
76 if ( $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ])
78 if (! is_dir ( $GLOBALS [ 'config' ][ 'CACHEDIR' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'CACHEDIR' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'CACHEDIR' ], 0705 ); }
79 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.
82 // Run config screen if first run:
83 if (! is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ])) install ();
85 require $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]; // Read login/password hash into $GLOBALS.
87 // Handling of old config file which do not have the new parameters.
88 if ( empty ( $GLOBALS [ 'title' ])) $GLOBALS [ 'title' ]= 'Shared links on ' . htmlspecialchars ( indexUrl ());
89 if ( empty ( $GLOBALS [ 'timezone' ])) $GLOBALS [ 'timezone' ]= date_default_timezone_get ();
90 if ( empty ( $GLOBALS [ 'disablesessionprotection' ])) $GLOBALS [ 'disablesessionprotection' ]= false ;
93 autoLocale (); // Sniff browser language and set date format accordingly.
94 header ( 'Content-Type: text/html; charset=utf-8' ); // We use UTF-8 for proper international characters handling.
97 function checkphpversion ()
99 if ( version_compare ( PHP_VERSION
, '5.1.0' ) < 0 )
101 header ( 'Content-Type: text/plain; charset=utf-8' );
102 echo 'Your server supports php ' . PHP_VERSION
. '. Shaarli requires at last php 5.1.0, and thus cannot run. Sorry.' ;
107 // Checks if an update is available for Shaarli.
108 // (at most once a day, and only for registered user.)
109 // Output: '' = no new version.
110 // other= the available version.
111 function checkUpdate ()
113 if (! isLoggedIn ()) return '' ; // Do not check versions for visitors.
115 // Get latest version number at most once a day.
116 if (! is_file ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]) || ( filemtime ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ])< time ()-( $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ])))
118 $version = shaarli_version
;
119 list ( $httpstatus , $headers , $data ) = getHTTP ( 'http://sebsauvage.net/files/shaarli_version.txt' , 2 );
120 if ( strpos ( $httpstatus , '200 OK' )!== false ) $version = $data ;
121 // If failed, nevermind. We don't want to bother the user with that.
122 file_put_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ], $version ); // touch file date
125 $newestversion = file_get_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]);
126 if ( version_compare ( $newestversion , shaarli_version
)== 1 ) return $newestversion ;
131 // -----------------------------------------------------------------------------------------------
132 // Simple cache system (mainly for the RSS/ATOM feeds).
136 private $url ; // Full URL of the page to cache (typically the value returned by pageUrl())
137 private $shouldBeCached ; // boolean: Should this url be cached ?
138 private $filename ; // Name of the cache file for this url
141 $url = url (typically the value returned by pageUrl())
142 $shouldBeCached = boolean. If false, the cache will be disabled.
144 public function __construct ( $url , $shouldBeCached )
147 $this- > filename
= $GLOBALS [ 'config' ][ 'PAGECACHE' ]. '/' . sha1 ( $url ). '.cache' ;
148 $this- > shouldBeCached
= $shouldBeCached ;
151 // If the page should be cached and a cached version exists,
152 // returns the cached version (otherwise, return null).
153 public function cachedVersion ()
155 if (! $this- > shouldBeCached
) return null ;
156 if ( is_file ( $this- > filename
)) { return file_get_contents ( $this
-> filename
); exit ; }
160 // Put a page in the cache.
161 public function cache ( $page )
163 if (! $this- > shouldBeCached
) return ;
164 if (! is_dir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'PAGECACHE' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'PAGECACHE' ], 0705 ); }
165 file_put_contents ( $this- > filename
, $page );
168 // Purge the whole cache.
169 // (call with pageCache::purgeCache())
170 public static function purgeCache ()
172 if ( is_dir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ]))
174 $handler = opendir ( $GLOBALS [ 'config' ][ 'PAGECACHE' ]);
177 while (( $filename = readdir ( $handler ))!== false )
179 if ( endsWith ( $filename , '.cache' )) { unlink ( $GLOBALS
[ 'config' ][ 'PAGECACHE' ]. '/' . $filename
); }
189 // -----------------------------------------------------------------------------------------------
191 function logm ( $message )
193 $t = strval ( date ( 'Y/m/d_H:i:s' )). ' - ' . $_SERVER [ "REMOTE_ADDR" ]. ' - ' . strval ( $message ). " \n " ;
194 file_put_contents ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/log.txt' , $t , FILE_APPEND
);
197 // Same as nl2br(), but escapes < and >
198 function nl2br_escaped ( $html )
200 return str_replace ( '>' , '>' , str_replace ( '<' , '<' , nl2br ( $html )));
203 /* Returns the small hash of a string
204 eg. smallHash('20111006_131924') --> yZH23w
206 - are unique (well, as unique as crc32, at last)
207 - are always 6 characters long.
208 - only use the following characters: a-z A-Z 0-9 - _ @
209 - are NOT cryptographically secure (they CAN be forged)
210 In Shaarli, they are used as a tinyurl-like link to individual entries.
212 function smallHash ( $text )
214 $t = rtrim ( base64_encode ( hash ( 'crc32' , $text , true )), '=' );
215 $t = str_replace ( '+' , '-' , $t ); // Get rid of characters which need encoding in URLs.
216 $t = str_replace ( '/' , '_' , $t );
217 $t = str_replace ( '=' , '@' , $t );
221 // In a string, converts urls to clickable links.
222 // Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
223 function text2clickable ( $url )
225 $redir = empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ];
226 return preg_replace ( '!(((?:https?|ftp|file)://|apt:)\S+[[:alnum:]]/?)!si' , '<a href="' . $redir . ' $1" rel="nofollow"> $1 </a>' , $url );
229 // This function inserts where relevant so that multiple spaces are properly displayed in HTML
230 // even in the absence of <pre> (This is used in description to keep text formatting)
231 function keepMultipleSpaces ( $text )
233 return str_replace ( ' ' , ' ' , $text );
236 // ------------------------------------------------------------------------------------------
237 // Sniff browser language to display dates in the right format automatically.
238 // (Note that is may not work on your server if the corresponding local is not installed.)
239 function autoLocale ()
241 $loc = 'en_US' ; // Default if browser does not send HTTP_ACCEPT_LANGUAGE
242 if ( isset ( $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ])) // eg. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
243 { // (It's a bit crude, but it works very well. Prefered language is always presented first.)
244 if ( preg_match ( '/([a-z] {2} (-[a-z] {2} )?)/i' , $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ], $matches )) $loc = $matches [ 1 ];
246 setlocale ( LC_TIME
, $loc ); // LC_TIME = Set local for date/time format only.
249 // ------------------------------------------------------------------------------------------
250 // PubSubHubbub protocol support (if enabled) [UNTESTED]
251 // (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
252 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ])) include './publisher.php' ;
255 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
257 $p = new Publisher ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]);
259 indexUrl (). '?do=atom' ,
262 $p- > publish_update ( $topic_url );
266 // ------------------------------------------------------------------------------------------
267 // Session management
268 define ( 'INACTIVITY_TIMEOUT' , 3600 ); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
269 ini_set ( 'session.use_cookies' , 1 ); // Use cookies to store session.
270 ini_set ( 'session.use_only_cookies' , 1 ); // Force cookies for session (phpsessionID forbidden in URL)
271 ini_set ( 'session.use_trans_sid' , false ); // Prevent php to use sessionID in URL if cookies are disabled.
272 session_name ( 'shaarli' );
275 // Returns the IP address of the client (Used to prevent session cookie hijacking.)
278 $ip = $_SERVER [ "REMOTE_ADDR" ];
279 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
280 if ( isset ( $_SERVER [ 'HTTP_X_FORWARDED_FOR' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_X_FORWARDED_FOR' ]; }
281 if ( isset ( $_SERVER [ 'HTTP_CLIENT_IP' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_CLIENT_IP' ]; }
285 // Check that user/password is correct.
286 function check_auth ( $login , $password )
288 $hash = sha1 ( $password . $login . $GLOBALS [ 'salt' ]);
289 if ( $login == $GLOBALS [ 'login' ] && $hash == $GLOBALS [ 'hash' ])
290 { // Login/password is correct.
291 $_SESSION [ 'uid' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // generate unique random number (different than phpsessionid)
292 $_SESSION [ 'ip' ]= allIPs (); // We store IP address(es) of the client to make sure session is not hijacked.
293 $_SESSION [ 'username' ]= $login ;
294 $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Set session expiration.
295 logm ( 'Login successful' );
298 logm ( 'Login failed for user ' . $login );
302 // Returns true if the user is logged in.
303 function isLoggedIn ()
305 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) return true ;
307 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
308 if ( empty ( $_SESSION [ 'uid' ]) || ( $GLOBALS [ 'disablesessionprotection' ]== false && $_SESSION [ 'ip' ]!= allIPs ()) || time ()>= $_SESSION [ 'expires_on' ])
313 if (! empty ( $_SESSION [ 'longlastingsession' ])) $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // In case of "Stay signed in" checked.
314 else $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Standard session expiration date.
320 function logout () { if ( isset ( $_SESSION
)) { unset ( $_SESSION
[ 'uid' ]); unset ( $_SESSION
[ 'ip' ]); unset ( $_SESSION
[ 'username' ]);} }
323 // ------------------------------------------------------------------------------------------
324 // Brute force protection system
325 // Several consecutive failed logins will ban the IP address for 30 minutes.
326 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 ?>" );
327 include $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ];
328 // Signal a failed login. Will ban the IP if too many failures:
329 function ban_loginFailed ()
331 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
332 if (! isset ( $gb [ 'FAILURES' ][ $ip ])) $gb [ 'FAILURES' ][ $ip ]= 0 ;
333 $gb [ 'FAILURES' ][ $ip ] ++
;
334 if ( $gb [ 'FAILURES' ][ $ip ]>( $GLOBALS [ 'config' ][ 'BAN_AFTER' ]- 1 ))
336 $gb [ 'BANS' ][ $ip ]= time () +
$GLOBALS [ 'config' ][ 'BAN_DURATION' ];
337 logm ( 'IP address banned from login' );
339 $GLOBALS [ 'IPBANS' ] = $gb ;
340 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
343 // Signals a successful login. Resets failed login counter.
344 function ban_loginOk ()
346 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
347 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
348 $GLOBALS [ 'IPBANS' ] = $gb ;
349 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
352 // Checks if the user CAN login. If 'true', the user can try to login.
353 function ban_canLogin ()
355 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
356 if ( isset ( $gb [ 'BANS' ][ $ip ]))
358 // User is banned. Check if the ban has expired:
359 if ( $gb [ 'BANS' ][ $ip ]<= time ())
360 { // Ban expired, user can try to login again.
362 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
363 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
364 return true ; // Ban has expired, user can login.
366 return false ; // User is banned.
368 return true ; // User is not banned.
371 // ------------------------------------------------------------------------------------------
372 // Process login form: Check if login/password is correct.
373 if ( isset ( $_POST [ 'login' ]))
375 if (! ban_canLogin ()) die ( 'I said: NO. You are banned for the moment. Go away.' );
376 if ( isset ( $_POST [ 'password' ]) && tokenOk ( $_POST [ 'token' ]) && ( check_auth ( $_POST [ 'login' ], $_POST [ 'password' ])))
377 { // Login/password is ok.
379 // If user wants to keep the session cookie even after the browser closes:
380 if (! empty ( $_POST [ 'longlastingsession' ]))
382 $_SESSION [ 'longlastingsession' ]= 31536000 ; // (31536000 seconds = 1 year)
383 $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // Set session expiration on server-side.
385 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
386 session_set_cookie_params ( $_SESSION [ 'longlastingsession' ], $cookiedir ); // Set session cookie expiration on client side
387 // Note: Never forget the trailing slash on the cookie path !
388 session_regenerate_id ( true ); // Send cookie with new expiration date to browser.
390 else // Standard session expiration (=when browser closes)
392 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
393 session_set_cookie_params ( 0 , $cookiedir ); // 0 means "When browser closes"
394 session_regenerate_id ( true );
396 // Optional redirect after login:
397 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 ; }
398 if ( isset ( $_POST [ 'returnurl' ]))
400 if ( endsWith ( $_POST [ 'returnurl' ], '?do=login' )) { header ( 'Location: ?' ); exit ; } // Prevent loops over login screen.
401 header ( 'Location: ' . $_POST [ 'returnurl' ]); exit ;
403 header ( 'Location: ?' ); exit ;
408 echo '<script language="JavaScript">alert("Wrong login/password.");document.location= \' ?do=login \' ;</script>' ; // Redirect to login screen.
413 // ------------------------------------------------------------------------------------------
414 // Misc utility functions:
416 // Returns the server URL (including port and http/https), without path.
417 // eg. "http://myserver.com:8080"
418 // You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
421 $https = (! empty ( $_SERVER [ 'HTTPS' ]) && ( strtolower ( $_SERVER [ 'HTTPS' ])== 'on' )) || $_SERVER [ "SERVER_PORT" ]== '443' ; // HTTPS detection.
422 $serverport = ( $_SERVER [ "SERVER_PORT" ]== '80' || ( $https && $_SERVER [ "SERVER_PORT" ]== '443' ) ? '' : ':' . $_SERVER [ "SERVER_PORT" ]);
423 return 'http' .( $https ? 's' : '' ). '://' . $_SERVER [ "SERVER_NAME" ]. $serverport ;
426 // Returns the absolute URL of current script, without the query.
427 // (eg. http://sebsauvage.net/links/)
430 return serverUrl () . ( $_SERVER [ "SCRIPT_NAME" ] == '/index.php' ? '/' : $_SERVER [ "SCRIPT_NAME" ]);
433 // Returns the absolute URL of current script, WITH the query.
434 // (eg. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
437 return indexUrl ().(! empty ( $_SERVER [ "QUERY_STRING" ]) ? '?' . $_SERVER [ "QUERY_STRING" ] : '' );
440 // Convert post_max_size/upload_max_filesize (eg.'16M') parameters to bytes.
441 function return_bytes ( $val )
443 $val = trim ( $val ); $last = strtolower ( $val [ strlen ( $val )- 1 ]);
446 case 'g' : $val *= 1024 ;
447 case 'm' : $val *= 1024 ;
448 case 'k' : $val *= 1024 ;
453 // Try to determine max file size for uploads (POST).
454 // Returns an integer (in bytes)
455 function getMaxFileSize ()
457 $size1 = return_bytes ( ini_get ( 'post_max_size' ));
458 $size2 = return_bytes ( ini_get ( 'upload_max_filesize' ));
459 // Return the smaller of two:
460 $maxsize = min ( $size1 , $size2 );
461 // FIXME: Then convert back to readable notations ? (eg. 2M instead of 2000000)
465 // Tells if a string start with a substring or not.
466 function startsWith ( $haystack , $needle , $case = true )
468 if ( $case ){ return ( strcmp ( substr ( $haystack
, 0 , strlen ( $needle
)), $needle
)=== 0 );}
469 return ( strcasecmp ( substr ( $haystack , 0 , strlen ( $needle )), $needle )=== 0 );
472 // Tells if a string ends with a substring or not.
473 function endsWith ( $haystack , $needle , $case = true )
475 if ( $case ){ return ( strcmp ( substr ( $haystack
, strlen ( $haystack
) - strlen ( $needle
)), $needle
)=== 0 );}
476 return ( strcasecmp ( substr ( $haystack , strlen ( $haystack ) - strlen ( $needle )), $needle )=== 0 );
479 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
480 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
481 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
482 function linkdate2timestamp ( $linkdate )
485 $r = sscanf ( $linkdate , '%4d%2d%2d_%2d%2d%2d' , $Y , $M , $D , $h , $m , $s );
486 return mktime ( $h , $m , $s , $M , $D , $Y );
489 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
490 (used to build the pubDate attribute in RSS feed.) */
491 function linkdate2rfc822 ( $linkdate )
493 return date ( 'r' , linkdate2timestamp ( $linkdate )); // 'r' is for RFC822 date format.
496 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
497 (used to build the updated tags in ATOM feed.) */
498 function linkdate2iso8601 ( $linkdate )
500 return date ( 'c' , linkdate2timestamp ( $linkdate )); // 'c' is for ISO 8601 date format.
503 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a localized date format.
504 (used to display link date on screen)
505 The date format is automatically chosen according to locale/languages sniffed from browser headers (see autoLocale()). */
506 function linkdate2locale ( $linkdate )
508 return utf8_encode ( strftime ( '%c' , linkdate2timestamp ( $linkdate ))); // %c is for automatic date format according to locale.
509 // Note that if you use a local which is not installed on your webserver,
510 // the date will not be displayed in the chosen locale, but probably in US notation.
513 // Parse HTTP response headers and return an associative array.
514 function http_parse_headers_shaarli ( $headers )
517 foreach ( $headers as $header )
519 $i = strpos ( $header , ': ' );
522 $key = substr ( $header , 0 , $i );
523 $value = substr ( $header , $i +
2 , strlen ( $header )- $i-2 );
531 Input: $url : url to get (http://...)
532 $timeout : Network timeout (will wait this many seconds for an anwser before giving up).
533 Output: An array. [0] = HTTP status message (eg. "HTTP/1.1 200 OK") or error message
534 [1] = associative array containing HTTP response headers (eg. echo getHTTP($url)[1]['Content-Type'])
536 Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
537 if (strpos($httpstatus,'200 OK')!==false)
538 echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
540 echo 'There was an error: '.htmlspecialchars($httpstatus)
542 function getHTTP ( $url , $timeout = 30 )
546 $options = array ( 'http' => array ( 'method' => 'GET' , 'timeout' => $timeout )); // Force network timeout
547 $context = stream_context_create ( $options );
548 $data = file_get_contents ( $url , false , $context ,- 1 , 4000000 ); // We download at most 4 Mb from source.
549 if (! $data ) { return array ( 'HTTP Error' , array (), '' ); }
550 $httpStatus = $http_response_header [ 0 ]; // eg. "HTTP/1.1 200 OK"
551 $responseHeaders = http_parse_headers_shaarli ( $http_response_header );
552 return array ( $httpStatus , $responseHeaders , $data );
554 catch ( Exception
$e ) // getHTTP *can* fail silentely (we don't care if the title cannot be fetched)
556 return array ( $e- > getMessage (), '' , '' );
560 // Extract title from an HTML document.
561 // (Returns an empty string if not found.)
562 function html_extract_title ( $html )
564 return preg_match ( '!<title>(.*?)</title>!is' , $html , $matches ) ? trim ( str_replace ( " \n " , ' ' , $matches [ 1 ])) : '' ;
567 // ------------------------------------------------------------------------------------------
568 // Token management for XSRF protection
569 // Token should be used in any form which acts on data (create,update,delete,import...).
570 if (! isset ( $_SESSION [ 'tokens' ])) $_SESSION [ 'tokens' ]= array (); // Token are attached to the session.
575 $rnd = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // We generate a random string.
576 $_SESSION [ 'tokens' ][ $rnd ]= 1 ; // Store it on the server side.
580 // Tells if a token is ok. Using this function will destroy the token.
582 function tokenOk ( $token )
584 if ( isset ( $_SESSION [ 'tokens' ][ $token ]))
586 unset ( $_SESSION [ 'tokens' ][ $token ]); // Token is used: destroy it.
587 return true ; // Token is ok.
589 return false ; // Wrong token, or already used.
592 // ------------------------------------------------------------------------------------------
593 /* This class is in charge of building the final page.
594 (This is basically a wrapper around RainTPL which pre-fills some fields.)
596 p.assign('myfield','myvalue');
597 p.renderPage('mytemplate');
602 private $tpl ; // RainTPL template
604 function __construct ()
609 private function initialize ()
611 $this- > tpl
= new RainTPL
;
612 $this- > tpl
-> assign ( 'newversion' , checkUpdate ());
613 $this- > tpl
-> assign ( 'feedurl' , htmlspecialchars ( indexUrl ()));
614 $searchcrits = '' ; // Search criteria
615 if (! empty ( $_GET [ 'searchtags' ])) $searchcrits .= '&searchtags=' . urlencode ( $_GET [ 'searchtags' ]);
616 elseif (! empty ( $_GET [ 'searchterm' ])) $searchcrits .= '&searchterm=' . urlencode ( $_GET [ 'searchterm' ]);
617 $this- > tpl
-> assign ( 'searchcrits' , $searchcrits );
618 $this- > tpl
-> assign ( 'source' , indexUrl ());
619 $this- > tpl
-> assign ( 'version' , shaarli_version
);
620 $this- > tpl
-> assign ( 'scripturl' , indexUrl ());
621 $this- > tpl
-> assign ( 'pagetitle' , 'Shaarli' );
622 $this- > tpl
-> assign ( 'privateonly' ,! empty ( $_SESSION [ 'privateonly' ])); // Show only private links ?
623 if (! empty ( $GLOBALS [ 'title' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'title' ]);
624 if (! empty ( $GLOBALS [ 'pagetitle' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'pagetitle' ]);
625 $this- > tpl
-> assign ( 'shaarlititle' , empty ( $GLOBALS [ 'title' ]) ? 'Shaarli' : $GLOBALS [ 'title' ] );
629 // The following assign() method is basically the same as RainTPL (except that it's lazy)
630 public function assign ( $what , $where )
632 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
633 $this- > tpl
-> assign ( $what , $where );
636 // Render a specific page (using a template).
637 // eg. pb.renderPage('picwall')
638 public function renderPage ( $page )
640 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
641 $this- > tpl
-> draw ( $page );
645 // ------------------------------------------------------------------------------------------
646 /* Data storage for links.
647 This object behaves like an associative array.
649 $mylinks = new linkdb();
650 echo $mylinks['20110826_161819']['title'];
651 foreach($mylinks as $link)
652 echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description'];
655 title : Title of the link
656 url : URL of the link. Can be absolute or relative. Relative URLs are permalinks (eg.'?m-ukcw')
657 description : description of the entry
658 private : Is this link private ? 0=no, other value=yes
659 linkdate : date of the creation of this entry, in the form YYYYMMDD_HHMMSS (eg.'20110914_192317')
660 tags : tags attached to this entry (separated by spaces)
662 We implement 3 interfaces:
663 - ArrayAccess so that this object behaves like an associative array.
664 - Iterator so that this object can be used in foreach() loops.
665 - Countable interface so that we can do a count() on this object.
667 class linkdb
implements Iterator
, Countable
, ArrayAccess
669 private $links ; // List of links (associative array. Key=linkdate (eg. "20110823_124546"), value= associative array (keys:title,description...)
670 private $urls ; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate)
671 private $keys ; // List of linkdate keys (for the Iterator interface implementation)
672 private $position ; // Position in the $this->keys array. (for the Iterator interface implementation.)
673 private $loggedin ; // Is the used logged in ? (used to filter private links)
676 function __construct ( $isLoggedIn )
677 // Input : $isLoggedIn : is the used logged in ?
679 $this- > loggedin
= $isLoggedIn ;
680 $this- > checkdb (); // Make sure data file exists.
681 $this- > readdb (); // Then read it.
684 // ---- Countable interface implementation
685 public function count () { return count ( $this
-> links
); }
687 // ---- ArrayAccess interface implementation
688 public function offsetSet ( $offset , $value )
690 if (! $this- > loggedin
) die ( 'You are not authorized to add a link.' );
691 if ( empty ( $value [ 'linkdate' ]) || empty ( $value [ 'url' ])) die ( 'Internal Error: A link should always have a linkdate and url.' );
692 if ( empty ( $offset )) die ( 'You must specify a key.' );
693 $this- > links
[ $offset ] = $value ;
694 $this- > urls
[ $value [ 'url' ]]= $offset ;
696 public function offsetExists ( $offset ) { return array_key_exists ( $offset
, $this
-> links
); }
697 public function offsetUnset ( $offset )
699 if (! $this- > loggedin
) die ( 'You are not authorized to delete a link.' );
700 $url = $this- > links
[ $offset ][ 'url' ]; unset ( $this- > urls
[ $url ]);
701 unset ( $this- > links
[ $offset ]);
703 public function offsetGet ( $offset ) { return isset ( $this
-> links
[ $offset
]) ? $this
-> links
[ $offset
] : null ; }
705 // ---- Iterator interface implementation
706 function rewind () { $this
-> keys
= array_keys ( $this
-> links
); rsort ( $this
-> keys
); $this
-> position
= 0 ; } // Start over for iteration, ordered by date (latest first).
707 function key () { return $this
-> keys
[ $this
-> position
]; } // current key
708 function current () { return $this
-> links
[ $this
-> keys
[ $this
-> position
]]; } // current value
709 function next () { ++$this
-> position
; } // go to next item
710 function valid () { return isset ( $this
-> keys
[ $this
-> position
]); } // Check if current position is valid.
713 private function checkdb () // Check if db directory and file exists.
715 if (! file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ])) // Create a dummy database for example.
717 $this- > links
= array ();
718 $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' );
719 $this- > links
[ $link [ 'linkdate' ]] = $link ;
720 $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' );
721 $this- > links
[ $link [ 'linkdate' ]] = $link ;
722 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
); // Write database to disk
726 // Read database from disk to memory
727 private function readdb ()
730 $this- > links
=( file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ]) ? unserialize ( gzinflate ( base64_decode ( substr ( file_get_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ]), strlen ( PHPPREFIX
),- strlen ( PHPSUFFIX
))))) : array () );
731 // Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439
733 // If user is not logged in, filter private links.
734 if (! $this- > loggedin
)
737 foreach ( $this- > links
as $link ) { if ( $link
[ 'private' ]!= 0 ) $toremove
[]= $link
[ 'linkdate' ]; }
738 foreach ( $toremove as $linkdate ) { unset ( $this
-> links
[ $linkdate
]); }
741 // Keep the list of the mapping URLs-->linkdate up-to-date.
743 foreach ( $this- > links
as $link ) { $this
-> urls
[ $link
[ 'url' ]]= $link
[ 'linkdate' ]; }
746 // Save database from memory to disk.
747 public function savedb ()
749 if (! $this- > loggedin
) die ( 'You are not authorized to change the database.' );
750 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
);
754 // Returns the link for a given URL (if it exists). false it does not exist.
755 public function getLinkFromUrl ( $url )
757 if ( isset ( $this- > urls
[ $url ])) return $this- > links
[ $this- > urls
[ $url ]];
761 // Case insentitive search among links (in url, title and description). Returns filtered list of links.
762 // eg. print_r($mydb->filterFulltext('hollandais'));
763 public function filterFulltext ( $searchterms )
765 // FIXME: explode(' ',$searchterms) and perform a AND search.
766 // FIXME: accept double-quotes to search for a string "as is" ?
768 $s = strtolower ( $searchterms );
769 foreach ( $this- > links
as $l )
771 $found = ( strpos ( strtolower ( $l [ 'title' ]), $s )!== false )
772 || ( strpos ( strtolower ( $l [ 'description' ]), $s )!== false )
773 || ( strpos ( strtolower ( $l [ 'url' ]), $s )!== false )
774 || ( strpos ( strtolower ( $l [ 'tags' ]), $s )!== false );
775 if ( $found ) $filtered [ $l [ 'linkdate' ]] = $l ;
782 // You can specify one or more tags (tags can be separated by space or comma).
783 // eg. print_r($mydb->filterTags('linux programming'));
784 public function filterTags ( $tags , $casesensitive = false )
786 $t = str_replace ( ',' , ' ' ,( $casesensitive ? $tags : strtolower ( $tags )));
787 $searchtags = explode ( ' ' , $t );
789 foreach ( $this- > links
as $l )
791 $linktags = explode ( ' ' ,( $casesensitive ? $l [ 'tags' ]: strtolower ( $l [ 'tags' ])));
792 if ( count ( array_intersect ( $linktags , $searchtags )) == count ( $searchtags ))
793 $filtered [ $l [ 'linkdate' ]] = $l ;
799 // Filter by day. Day must be in the form 'YYYYMMDD' (eg. '20120125')
800 // Sort order is: older articles first.
801 // eg. print_r($mydb->filterDay('20120125'));
802 public function filterDay ( $day )
805 foreach ( $this- > links
as $l )
807 if ( startsWith ( $l [ 'linkdate' ], $day )) $filtered [ $l [ 'linkdate' ]] = $l ;
812 // Filter by smallHash.
813 // Only 1 article is returned.
814 public function filterSmallHash ( $smallHash )
817 foreach ( $this- > links
as $l )
819 if ( $smallHash == smallHash ( $l [ 'linkdate' ])) // Yes, this is ugly and slow
821 $filtered [ $l [ 'linkdate' ]] = $l ;
828 // Returns the list of all tags
829 // Output: associative array key=tags, value=0
830 public function allTags ()
833 foreach ( $this- > links
as $link )
834 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
835 if (! empty ( $tag )) $tags [ $tag ]=( empty ( $tags [ $tag ]) ? 1 : $tags [ $tag ] +
1 );
836 arsort ( $tags ); // Sort tags by usage (most used tag first)
840 // Returns the list of days containing articles (oldest first)
841 // Output: An array containing days (in format YYYYMMDD).
842 public function days ()
845 foreach ( array_keys ( $this- > links
) as $day )
847 $linkdays [ substr ( $day , 0 , 8 )]= 0 ;
849 $linkdays = array_keys ( $linkdays );
855 // ------------------------------------------------------------------------------------------
856 // Ouput the last 50 links in RSS 2.0 format.
859 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
862 $query = $_SERVER [ "QUERY_STRING" ];
863 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=rss' ) && ! isLoggedIn ());
864 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
866 // If cached was not found (or not usable), then read the database and build the response:
867 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
869 // Optionnaly filter the results:
870 $linksToDisplay = array ();
871 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
872 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
873 else $linksToDisplay = $LINKSDB ;
875 $pageaddr = htmlspecialchars ( indexUrl ());
876 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">' ;
877 echo '<channel><title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title><link>' . $pageaddr . '</link>' ;
878 echo '<description>Shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n\n " ;
879 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
881 echo '<!-- PubSubHubbub Discovery -->' ;
882 echo '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" xmlns="http://www.w3.org/2005/Atom" />' ;
883 echo '<link rel="self" href="' . htmlspecialchars ( $pageaddr ). '?do=rss" xmlns="http://www.w3.org/2005/Atom" />' ;
884 echo '<!-- End Of PubSubHubbub Discovery -->' ;
887 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
888 while ( $i < 50 && $i < count ( $keys ))
890 $link = $linksToDisplay [ $keys [ $i ]];
891 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
892 $rfc822date = linkdate2rfc822 ( $link [ 'linkdate' ]);
893 $absurl = htmlspecialchars ( $link [ 'url' ]);
894 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
895 echo '<item><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><guid>' . $guid . '</guid><link>' . $absurl . '</link>' ;
896 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) echo '<pubDate>' . htmlspecialchars ( $rfc822date ). "</pubDate> \n " ;
897 if ( $link [ 'tags' ]!= '' ) // Adding tags to each RSS entry (as mentioned in RSS specification)
899 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag ) { echo '<category domain="' . htmlspecialchars ( $pageaddr
). '">' . htmlspecialchars ( $tag
). '</category>' . " \n " ; }
901 echo '<description><![CDATA[' . nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ])))). ']]></description>' . " \n </item> \n " ;
904 echo '</channel></rss>' ;
906 $cache- > cache ( ob_get_contents ());
911 // ------------------------------------------------------------------------------------------
912 // Ouput the last 50 links in ATOM format.
915 header ( 'Content-Type: application/atom+xml; charset=utf-8' );
918 $query = $_SERVER [ "QUERY_STRING" ];
919 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=atom' ) && ! isLoggedIn ());
920 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
921 // If cached was not found (or not usable), then read the database and build the response:
923 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
926 // Optionnaly filter the results:
927 $linksToDisplay = array ();
928 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
929 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
930 else $linksToDisplay = $LINKSDB ;
932 $pageaddr = htmlspecialchars ( indexUrl ());
936 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
937 while ( $i < 50 && $i < count ( $keys ))
939 $link = $linksToDisplay [ $keys [ $i ]];
940 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
941 $iso8601date = linkdate2iso8601 ( $link [ 'linkdate' ]);
942 $latestDate = max ( $latestDate , $iso8601date );
943 $absurl = htmlspecialchars ( $link [ 'url' ]);
944 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
945 $entries .= '<entry><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><link href="' . $absurl . '" /><id>' . $guid . '</id>' ;
946 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $entries .= '<updated>' . htmlspecialchars ( $iso8601date ). '</updated>' ;
947 $entries .= '<content type="html">' . htmlspecialchars ( nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))))). "</content> \n " ;
948 if ( $link [ 'tags' ]!= '' ) // Adding tags to each ATOM entry (as mentioned in ATOM specification)
950 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
951 { $entries
.= '<category scheme="' . htmlspecialchars ( $pageaddr
, ENT_QUOTES
). '" term="' . htmlspecialchars ( $tag
, ENT_QUOTES
). '" />' . " \n " ; }
953 $entries .= "</entry> \n " ;
956 $feed = '<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">' ;
957 $feed .= '<title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title>' ;
958 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $feed .= '<updated>' . htmlspecialchars ( $latestDate ). '</updated>' ;
959 $feed .= '<link rel="self" href="' . htmlspecialchars ( serverUrl (). $_SERVER [ "REQUEST_URI" ]). '" />' ;
960 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
962 $feed .= '<!-- PubSubHubbub Discovery -->' ;
963 $feed .= '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" />' ;
964 $feed .= '<!-- End Of PubSubHubbub Discovery -->' ;
966 $feed .= '<author><name>' . htmlspecialchars ( $pageaddr ). '</name><uri>' . htmlspecialchars ( $pageaddr ). '</uri></author>' ;
967 $feed .= '<id>' . htmlspecialchars ( $pageaddr ). '</id>' . " \n\n " ; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
972 $cache- > cache ( ob_get_contents ());
977 // ------------------------------------------------------------------------------------------
978 // Daily RSS feed: 1 RSS entry per day giving all the links on that day.
979 // Gives the last 7 days (which have links).
980 // This RSS feed cannot be filtered.
981 function showDailyRSS ()
984 $query = $_SERVER [ "QUERY_STRING" ];
985 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=dailyrss' ) && ! isLoggedIn ());
986 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
987 // If cached was not found (or not usable), then read the database and build the response:
988 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
990 /* Some Shaarlies may have very few links, so we need to look
991 back in time (rsort()) until we have enough days ($nb_of_days).
993 $linkdates = array (); foreach ( $LINKSDB as $linkdate => $value ) { $linkdates
[]= $linkdate
; }
995 $nb_of_days = 7 ; // We take 7 days.
998 foreach ( $linkdates as $linkdate )
1000 $day = substr ( $linkdate , 0 , 8 ); // Extract day (without time)
1001 if ( strcmp ( $day , $today )< 0 )
1003 if ( empty ( $days [ $day ])) $days [ $day ]= array ();
1004 $days [ $day ][]= $linkdate ;
1006 if ( count ( $days )> $nb_of_days ) break ; // Have we collected enough days ?
1009 // Build the RSS feed.
1010 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
1011 $pageaddr = htmlspecialchars ( indexUrl ());
1012 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">' ;
1013 echo '<channel><title>Daily - ' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title><link>' . $pageaddr . '</link>' ;
1014 echo '<description>Daily shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n " ;
1016 foreach ( $days as $day => $linkdates ) // For each day.
1018 $daydate = utf8_encode ( strftime ( '%A %d, %B %Y' , linkdate2timestamp ( $day . '_000000' ))); // Full text date
1019 $rfc822date = linkdate2rfc822 ( $day . '_000000' );
1020 $absurl = htmlspecialchars ( indexUrl (). '?do=daily&day=' . $day ); // Absolute URL of the corresponding "Daily" page.
1021 echo '<item><title>' . htmlspecialchars ( $GLOBALS [ 'title' ]. ' - ' . $daydate ). '</title><guid>' . $absurl . '</guid><link>' . $absurl . '</link>' ;
1022 echo '<pubDate>' . htmlspecialchars ( $rfc822date ). "</pubDate>" ;
1024 // Build the HTML body of this RSS entry.
1028 // We pre-format some fields for proper output.
1029 foreach ( $linkdates as $linkdate )
1031 $l = $LINKSDB [ $linkdate ];
1032 $l [ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $l [ 'description' ]))));
1033 $l [ 'thumbnail' ] = thumbnail ( $l [ 'url' ]);
1034 $l [ 'localdate' ]= linkdate2locale ( $l [ 'linkdate' ]);
1035 if ( startsWith ( $l [ 'url' ], '?' )) $l [ 'url' ]= indexUrl (). $l [ 'url' ]; // make permalink URL absolute
1036 $links [ $linkdate ]= $l ;
1038 // Then build the HTML for this day:
1040 $tpl- > assign ( 'links' , $links );
1041 $html = $tpl- > draw ( 'dailyrss' , $return_string = true );
1043 echo '<description><![CDATA[' . $html . ']]></description>' . " \n </item> \n\n " ;
1046 echo '</channel></rss>' ;
1048 $cache- > cache ( ob_get_contents ());
1054 function showDaily ()
1056 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1059 $day = Date ( 'Ymd' , strtotime ( '-1 day' )); // Yesterday, in format YYYYMMDD.
1060 if ( isset ( $_GET [ 'day' ])) $day = $_GET [ 'day' ];
1062 $days = $LINKSDB- > days ();
1063 $i = array_search ( $day , $days );
1064 if ( $i == false ) { $i
= count ( $days
)- 1 ; $day
= $days
[ $i
]; }
1069 if ( $i > 1 ) $previousday = $days [ $i-1 ];
1070 if ( $i < count ( $days )- 1 ) $nextday = $days [ $i +
1 ];
1073 $linksToDisplay = $LINKSDB- > filterDay ( $day );
1074 // We pre-format some fields for proper output.
1075 foreach ( $linksToDisplay as $key => $link )
1077 $linksToDisplay [ $key ][ 'taglist' ]= explode ( ' ' , $link [ 'tags' ]);
1078 $linksToDisplay [ $key ][ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))));
1079 $linksToDisplay [ $key ][ 'thumbnail' ] = thumbnail ( $link [ 'url' ]);
1082 /* We need to spread the articles on 3 columns.
1083 I did not want to use a javascript lib like http://masonry.desandro.com/
1084 so I manually spread entries with a simple method: I roughly evaluate the
1085 height of a div according to title and description length.
1087 $columns = array ( array (), array (), array ()); // Entries to display, for each column.
1088 $fill = array ( 0 , 0 , 0 ); // Rough estimate of columns fill.
1089 foreach ( $linksToDisplay as $key => $link )
1091 // Roughly estimate length of entry (by counting characters)
1092 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1093 // Description: 836 characters gives roughly 342 pixel height.
1094 // This is not perfect, but it's usually ok.
1095 $length = strlen ( $link [ 'title' ]) +
( 342 * strlen ( $link [ 'description' ]))/ 836 ;
1096 if ( $link [ 'thumbnail' ]) $length +
= 100 ; // 1 thumbnails roughly takes 100 pixels height.
1097 // Then put in column which is the less filled:
1098 $smallest = min ( $fill ); // find smallest value in array.
1099 $index = array_search ( $smallest , $fill ); // find index of this smallest value.
1100 array_push ( $columns [ $index ], $link ); // Put entry in this column.
1101 $fill [ $index ] +
= $length ;
1103 $PAGE = new pageBuilder
;
1104 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1105 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1106 $PAGE- > assign ( 'col1' , $columns [ 0 ]);
1107 $PAGE- > assign ( 'col1' , $columns [ 0 ]);
1108 $PAGE- > assign ( 'col2' , $columns [ 1 ]);
1109 $PAGE- > assign ( 'col3' , $columns [ 2 ]);
1110 $PAGE- > assign ( 'day' , utf8_encode ( strftime ( '%A %d, %B %Y' , linkdate2timestamp ( $day . '_000000' ))));
1111 $PAGE- > assign ( 'previousday' , $previousday );
1112 $PAGE- > assign ( 'nextday' , $nextday );
1113 $PAGE- > renderPage ( 'daily' );
1118 // ------------------------------------------------------------------------------------------
1119 // Render HTML page (according to URL parameters and user rights)
1120 function renderPage ()
1122 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1124 // -------- Display login form.
1125 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=login' ))
1127 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) { header ( 'Location: ?' ); exit ; } // No need to login for open Shaarli
1128 $token = '' ; if ( ban_canLogin ()) $token = getToken (); // Do not waste token generation if not useful.
1129 $PAGE = new pageBuilder
;
1130 $PAGE- > assign ( 'token' , $token );
1131 $PAGE- > assign ( 'returnurl' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ]: '' ));
1132 $PAGE- > renderPage ( 'loginform' );
1135 // -------- User wants to logout.
1136 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=logout' ))
1140 header ( 'Location: ?' );
1144 // -------- Picture wall
1145 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=picwall' ))
1147 // Optionnaly filter the results:
1149 if (! empty ( $_GET [ 'searchterm' ])) $links = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
1150 elseif (! empty ( $_GET [ 'searchtags' ])) $links = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1151 else $links = $LINKSDB ;
1153 $linksToDisplay = array ();
1155 // Get only links which have a thumbnail.
1156 foreach ( $links as $link )
1158 $permalink = '?' . htmlspecialchars ( smallhash ( $link [ 'linkdate' ]), ENT_QUOTES
);
1159 $thumb = lazyThumbnail ( $link [ 'url' ], $permalink );
1160 if ( $thumb != '' ) // Only output links which have a thumbnail.
1162 $link [ 'thumbnail' ]= $thumb ; // Thumbnail HTML code.
1163 $link [ 'permalink' ]= $permalink ;
1164 $linksToDisplay []= $link ; // Add to array.
1167 $PAGE = new pageBuilder
;
1168 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1169 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1170 $PAGE- > renderPage ( 'picwall' );
1174 // -------- Tag cloud
1175 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tagcloud' ))
1177 $tags = $LINKSDB- > allTags ();
1178 // We sort tags alphabetically, then choose a font size according to count.
1179 // First, find max value.
1180 $maxcount = 0 ; foreach ( $tags as $key => $value ) $maxcount = max ( $maxcount , $value );
1183 foreach ( $tags as $key => $value )
1185 $tagList [ $key ] = array ( 'count' => $value , 'size' => max ( 40 * $value / $maxcount , 8 ));
1187 $PAGE = new pageBuilder
;
1188 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1189 $PAGE- > assign ( 'tags' , $tagList );
1190 $PAGE- > renderPage ( 'tagcloud' );
1194 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1195 if ( isset ( $_GET [ 'addtag' ]))
1197 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1198 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?searchtags=' . urlencode ( $_GET
[ 'addtag' ])); exit ; } // In case browser does not send HTTP_REFERER
1199 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1200 $params [ 'searchtags' ] = ( empty ( $params [ 'searchtags' ]) ? trim ( $_GET [ 'addtag' ]) : trim ( $params [ 'searchtags' ]). ' ' . trim ( $_GET [ 'addtag' ]));
1201 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1202 header ( 'Location: ?' . http_build_query ( $params ));
1206 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1207 if ( isset ( $_GET [ 'removetag' ]))
1209 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1210 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?' ); exit ; } // In case browser does not send HTTP_REFERER
1211 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1212 if ( isset ( $params [ 'searchtags' ]))
1214 $tags = explode ( ' ' , $params [ 'searchtags' ]);
1215 $tags = array_diff ( $tags , array ( $_GET [ 'removetag' ])); // Remove value from array $tags.
1216 if ( count ( $tags )== 0 ) unset ( $params [ 'searchtags' ]); else $params [ 'searchtags' ] = implode ( ' ' , $tags );
1217 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1219 header ( 'Location: ?' . http_build_query ( $params ));
1223 // -------- User wants to change the number of links per page (linksperpage=...)
1224 if ( isset ( $_GET [ 'linksperpage' ]))
1226 if ( is_numeric ( $_GET [ 'linksperpage' ])) { $_SESSION
[ 'LINKS_PER_PAGE' ]= abs ( intval ( $_GET
[ 'linksperpage' ])); }
1227 header ( 'Location: ' .( empty ( $_SERVER [ 'HTTP_REFERER' ])? '?' : $_SERVER [ 'HTTP_REFERER' ]));
1231 // -------- User wants to see only private links (toggle)
1232 if ( isset ( $_GET [ 'privateonly' ]))
1234 if ( empty ( $_SESSION [ 'privateonly' ]))
1236 $_SESSION [ 'privateonly' ]= 1 ; // See only private links
1240 unset ( $_SESSION [ 'privateonly' ]); // See all links
1242 header ( 'Location: ' .( empty ( $_SERVER [ 'HTTP_REFERER' ])? '?' : $_SERVER [ 'HTTP_REFERER' ]));
1246 // -------- Handle other actions allowed for non-logged in users:
1249 // User tries to post new link but is not loggedin:
1250 // Show login screen, then redirect to ?post=...
1251 if ( isset ( $_GET [ 'post' ]))
1253 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.
1256 $PAGE = new pageBuilder
;
1257 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1258 $PAGE- > renderPage ( 'linklist' );
1259 exit ; // Never remove this one ! All operations below are reserved for logged in user.
1262 // -------- All other functions are reserved for the registered user:
1264 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1265 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tools' ))
1267 $PAGE = new pageBuilder
;
1268 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1269 $PAGE- > assign ( 'pageabsaddr' , indexUrl ());
1270 $PAGE- > renderPage ( 'tools' );
1274 // -------- User wants to change his/her password.
1275 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changepasswd' ))
1277 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) die ( 'You are not supposed to change a password on an Open Shaarli.' );
1278 if (! empty ( $_POST [ 'setpassword' ]) && ! empty ( $_POST [ 'oldpassword' ]))
1280 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1282 // Make sure old password is correct.
1283 $oldhash = sha1 ( $_POST [ 'oldpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1284 if ( $oldhash != $GLOBALS [ 'hash' ]) { echo '<script language="JavaScript">alert("The old password is not correct.");document.location= \' ?do=changepasswd \' ;</script>' ; exit ; }
1285 // Save new password
1286 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
1287 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1289 echo '<script language="JavaScript">alert("Your password has been changed.");document.location= \' ?do=tools \' ;</script>' ;
1292 else // show the change password form.
1294 $PAGE = new pageBuilder
;
1295 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1296 $PAGE- > assign ( 'token' , getToken ());
1297 $PAGE- > renderPage ( 'changepassword' );
1302 // -------- User wants to change configuration
1303 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=configure' ))
1305 if (! empty ( $_POST [ 'title' ]) )
1307 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1309 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
1310 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
1311 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
1312 $GLOBALS [ 'timezone' ] = $tz ;
1313 $GLOBALS [ 'title' ]= $_POST [ 'title' ];
1314 $GLOBALS [ 'redirector' ]= $_POST [ 'redirector' ];
1315 $GLOBALS [ 'disablesessionprotection' ]=! empty ( $_POST [ 'disablesessionprotection' ]);
1317 echo '<script language="JavaScript">alert("Configuration was saved.");document.location= \' ?do=tools \' ;</script>' ;
1320 else // Show the configuration form.
1322 $PAGE = new pageBuilder
;
1323 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1324 $PAGE- > assign ( 'token' , getToken ());
1325 $PAGE- > assign ( 'title' , htmlspecialchars ( empty ( $GLOBALS [ 'title' ]) ? '' : $GLOBALS [ 'title' ] , ENT_QUOTES
));
1326 $PAGE- > assign ( 'redirector' , htmlspecialchars ( empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ] , ENT_QUOTES
));
1327 list ( $timezone_form , $timezone_js ) = templateTZform ( $GLOBALS [ 'timezone' ]);
1328 $PAGE- > assign ( 'timezone_form' , $timezone_form ); // FIXME: put entire tz form generation in template ?
1329 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1330 $PAGE- > renderPage ( 'configure' );
1335 // -------- User wants to rename a tag or delete it
1336 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changetag' ))
1338 if ( empty ( $_POST [ 'fromtag' ]))
1340 $PAGE = new pageBuilder
;
1341 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1342 $PAGE- > assign ( 'token' , getToken ());
1343 $PAGE- > renderPage ( 'changetag' );
1346 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1349 if (! empty ( $_POST [ 'deletetag' ]) && ! empty ( $_POST [ 'fromtag' ]))
1351 $needle = trim ( $_POST [ 'fromtag' ]);
1352 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1353 foreach ( $linksToAlter as $key => $value )
1355 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1356 unset ( $tags [ array_search ( $needle , $tags )]); // Remove tag.
1357 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1358 $LINKSDB [ $key ]= $value ;
1360 $LINKSDB- > savedb (); // save to disk
1361 echo '<script language="JavaScript">alert("Tag was removed from ' . count ( $linksToAlter ). ' links.");document.location= \' ? \' ;</script>' ;
1366 if (! empty ( $_POST [ 'renametag' ]) && ! empty ( $_POST [ 'fromtag' ]) && ! empty ( $_POST [ 'totag' ]))
1368 $needle = trim ( $_POST [ 'fromtag' ]);
1369 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1370 foreach ( $linksToAlter as $key => $value )
1372 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1373 $tags [ array_search ( $needle , $tags )] = trim ( $_POST [ 'totag' ]); // Remplace tags value.
1374 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1375 $LINKSDB [ $key ]= $value ;
1377 $LINKSDB- > savedb (); // save to disk
1378 echo '<script language="JavaScript">alert("Tag was renamed in ' . count ( $linksToAlter ). ' links.");document.location= \' ?searchtags=' . urlencode ( $_POST [ 'totag' ]). ' \' ;</script>' ;
1383 // -------- User wants to add a link without using the bookmarklet: show form.
1384 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=addlink' ))
1386 $PAGE = new pageBuilder
;
1387 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1388 $PAGE- > renderPage ( 'addlink' );
1392 // -------- User clicked the "Save" button when editing a link: Save link to database.
1393 if ( isset ( $_POST [ 'save_edit' ]))
1395 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1396 $tags = trim ( preg_replace ( '/\s\s+/' , ' ' , $_POST [ 'lf_tags' ])); // Remove multiple spaces.
1397 $linkdate = $_POST [ 'lf_linkdate' ];
1398 $link = array ( 'title' => trim ( $_POST [ 'lf_title' ]), 'url' => trim ( $_POST [ 'lf_url' ]), 'description' => trim ( $_POST [ 'lf_description' ]), 'private' =>( isset ( $_POST [ 'lf_private' ]) ? 1 : 0 ),
1399 'linkdate' => $linkdate , 'tags' => str_replace ( ',' , ' ' , $tags ));
1400 if ( $link [ 'title' ]== '' ) $link [ 'title' ]= $link [ 'url' ]; // If title is empty, use the URL as title.
1401 $LINKSDB [ $linkdate ] = $link ;
1402 $LINKSDB- > savedb (); // save to disk
1405 // If we are called from the bookmarklet, we must close the popup:
1406 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1407 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1408 header ( 'Location: ' . $returnurl ); // After saving the link, redirect to the page the user was on.
1412 // -------- User clicked the "Cancel" button when editing a link.
1413 if ( isset ( $_POST [ 'cancel_edit' ]))
1415 // If we are called from the bookmarklet, we must close the popup;
1416 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1417 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1418 header ( 'Location: ' . $returnurl ); // After canceling, redirect to the page the user was on.
1422 // -------- User clicked the "Delete" button when editing a link : Delete link from database.
1423 if ( isset ( $_POST [ 'delete_link' ]))
1425 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1426 // We do not need to ask for confirmation:
1427 // - confirmation is handled by javascript
1428 // - we are protected from XSRF by the token.
1429 $linkdate = $_POST [ 'lf_linkdate' ];
1430 unset ( $LINKSDB [ $linkdate ]);
1431 $LINKSDB- > savedb (); // save to disk
1433 // If we are called from the bookmarklet, we must close the popup:
1434 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1435 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1436 if ( $returnurl == '?' ) { $returnurl
= ( isset ( $_SERVER
[ 'HTTP_REFERER' ]) ? $_SERVER
[ 'HTTP_REFERER' ] : '?' ); }
1437 header ( 'Location: ' . $returnurl ); // After deleting the link, redirect to the page the user was on.
1441 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1442 if ( isset ( $_GET [ 'edit_link' ]))
1444 $link = $LINKSDB [ $_GET [ 'edit_link' ]]; // Read database
1445 if (! $link ) { header ( 'Location: ?' ); exit ; } // Link not found in database.
1446 $PAGE = new pageBuilder
;
1447 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1448 $PAGE- > assign ( 'link' , $link );
1449 $PAGE- > assign ( 'link_is_new' , false );
1450 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1451 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1452 $PAGE- > renderPage ( 'editlink' );
1456 // -------- User want to post a new link: Display link edit form.
1457 if ( isset ( $_GET [ 'post' ]))
1461 // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
1462 $i = strpos ( $url , '&utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1463 $i = strpos ( $url , '?utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1464 $i = strpos ( $url , '#xtor=RSS-' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1466 $link_is_new = false ;
1467 $link = $LINKSDB- > getLinkFromUrl ( $url ); // Check if URL is not already in database (in this case, we will edit the existing link)
1470 $link_is_new = true ; // This is a new link
1471 $linkdate = strval ( date ( 'Ymd_His' ));
1472 $title = ( empty ( $_GET [ 'title' ]) ? '' : $_GET [ 'title' ] ); // Get title if it was provided in URL (by the bookmarklet).
1473 $description = '' ; $tags = '' ; $private = 0 ;
1474 if (( $url != '' ) && parse_url ( $url , PHP_URL_SCHEME
)== '' ) $url = 'http://' . $url ;
1475 // 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.)
1476 if ( empty ( $title ) && parse_url ( $url , PHP_URL_SCHEME
)== 'http' )
1478 list ( $status , $headers , $data ) = getHTTP ( $url , 4 ); // Short timeout to keep the application responsive.
1479 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
1480 if ( strpos ( $status , '200 OK' )!== false ) $title = html_entity_decode ( html_extract_title ( $data ), ENT_QUOTES
, 'UTF-8' );
1483 if ( $url == '' ) $url = '?' . smallHash ( $linkdate ); // In case of empty URL, this is just a text (with a link that point to itself)
1484 $link = array ( 'linkdate' => $linkdate , 'title' => $title , 'url' => $url , 'description' => $description , 'tags' => $tags , 'private' => 0 );
1487 $PAGE = new pageBuilder
;
1488 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1489 $PAGE- > assign ( 'link' , $link );
1490 $PAGE- > assign ( 'link_is_new' , $link_is_new );
1491 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1492 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1493 $PAGE- > renderPage ( 'editlink' );
1497 // -------- Export as Netscape Bookmarks HTML file.
1498 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=export' ))
1500 if ( empty ( $_GET [ 'what' ]))
1502 $PAGE = new pageBuilder
;
1503 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1504 $PAGE- > renderPage ( 'export' );
1507 $exportWhat = $_GET [ 'what' ];
1508 if (! array_intersect ( array ( 'all' , 'public' , 'private' ), array ( $exportWhat ))) die ( 'What are you trying to export ???' );
1510 header ( 'Content-Type: text/html; charset=utf-8' );
1511 header ( 'Content-disposition: attachment; filename=bookmarks_' . $exportWhat . '_' . strval ( date ( 'Ymd_His' )). '.html' );
1512 $currentdate = date ( 'Y/m/d H:i:s' );
1514 <!DOCTYPE NETSCAPE-Bookmark-file-1>
1515 <!-- This is an automatically generated file.
1516 It will be read and overwritten.
1518 <!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1519 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1520 <TITLE>Bookmarks</TITLE>
1523 foreach ( $LINKSDB as $link )
1525 if ( $exportWhat == 'all' ||
1526 ( $exportWhat == 'private' && $link [ 'private' ]!= 0 ) ||
1527 ( $exportWhat == 'public' && $link [ 'private' ]== 0 ))
1529 echo '<DT><A HREF="' . htmlspecialchars ( $link [ 'url' ]). '" ADD_DATE="' . linkdate2timestamp ( $link [ 'linkdate' ]). '" PRIVATE="' . $link [ 'private' ]. '"' ;
1530 if ( $link [ 'tags' ]!= '' ) echo ' TAGS="' . htmlspecialchars ( str_replace ( ' ' , ',' , $link [ 'tags' ])). '"' ;
1531 echo '>' . htmlspecialchars ( $link [ 'title' ]). "</A> \n " ;
1532 if ( $link [ 'description' ]!= '' ) echo '<DD>' . htmlspecialchars ( $link [ 'description' ]). " \n " ;
1538 // -------- User is uploading a file for import
1539 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=upload' ))
1541 // If file is too big, some form field may be missing.
1542 if (! isset ( $_POST [ 'token' ]) || (! isset ( $_FILES )) || ( isset ( $_FILES [ 'filetoupload' ][ 'size' ]) && $_FILES [ 'filetoupload' ][ 'size' ]== 0 ))
1544 $returnurl = ( empty ( $_SERVER [ 'HTTP_REFERER' ]) ? '?' : $_SERVER [ 'HTTP_REFERER' ] );
1545 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>' ;
1548 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1553 // -------- Show upload/import dialog:
1554 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=import' ))
1556 $PAGE = new pageBuilder
;
1557 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1558 $PAGE- > assign ( 'token' , getToken ());
1559 $PAGE- > assign ( 'maxfilesize' , getMaxFileSize ());
1560 $PAGE- > renderPage ( 'import' );
1564 // -------- Otherwise, simply display search form and links:
1565 $PAGE = new pageBuilder
;
1566 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1567 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1568 $PAGE- > renderPage ( 'linklist' );
1572 // -----------------------------------------------------------------------------------------------
1573 // Process the import file form.
1574 function importFile ()
1576 if (!( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ])) { die ( 'Not allowed.' ); }
1577 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1578 $filename = $_FILES [ 'filetoupload' ][ 'name' ];
1579 $filesize = $_FILES [ 'filetoupload' ][ 'size' ];
1580 $data = file_get_contents ( $_FILES [ 'filetoupload' ][ 'tmp_name' ]);
1581 $private = ( empty ( $_POST [ 'private' ]) ? 0 : 1 ); // Should the links be imported as private ?
1582 $overwrite = ! empty ( $_POST [ 'overwrite' ]) ; // Should the imported links overwrite existing ones ?
1587 if ( startsWith ( $data , '<!DOCTYPE NETSCAPE-Bookmark-file-1>' )) $type = 'netscape' ; // Netscape bookmark file (aka Firefox).
1589 // Then import the bookmarks.
1590 if ( $type == 'netscape' )
1592 // This is a standard Netscape-style bookmark file.
1593 // This format is supported by all browsers (except IE, of course), also delicious, diigo and others.
1594 foreach ( explode ( '<DT>' , $data ) as $html ) // explode is very fast
1596 $link = array ( 'linkdate' => '' , 'title' => '' , 'url' => '' , 'description' => '' , 'tags' => '' , 'private' => 0 );
1597 $d = explode ( '<DD>' , $html );
1598 if ( startswith ( $d [ 0 ], '<A ' ))
1600 $link [ 'description' ] = ( isset ( $d [ 1 ]) ? html_entity_decode ( trim ( $d [ 1 ]), ENT_QUOTES
, 'UTF-8' ) : '' ); // Get description (optional)
1601 preg_match ( '!<A .*?>(.*?)</A>!i' , $d [ 0 ], $matches ); $link [ 'title' ] = ( isset ( $matches [ 1 ]) ? trim ( $matches [ 1 ]) : '' ); // Get title
1602 $link [ 'title' ] = html_entity_decode ( $link [ 'title' ], ENT_QUOTES
, 'UTF-8' );
1603 preg_match_all ( '! ([A-Z_]+)= \" (.*?)"!i' , $html , $matches , PREG_SET_ORDER
); // Get all other attributes
1605 foreach ( $matches as $m )
1607 $attr = $m [ 1 ]; $value = $m [ 2 ];
1608 if ( $attr == 'HREF' ) $link [ 'url' ]= html_entity_decode ( $value , ENT_QUOTES
, 'UTF-8' );
1609 elseif ( $attr == 'ADD_DATE' ) $raw_add_date = intval ( $value );
1610 elseif ( $attr == 'PRIVATE' ) $link [ 'private' ]=( $value == '0' ? 0 : 1 );
1611 elseif ( $attr == 'TAGS' ) $link [ 'tags' ]= html_entity_decode ( str_replace ( ',' , ' ' , $value ), ENT_QUOTES
, 'UTF-8' );
1613 if ( $link [ 'url' ]!= '' )
1615 if ( $private == 1 ) $link [ 'private' ]= 1 ;
1616 $dblink = $LINKSDB- > getLinkFromUrl ( $link [ 'url' ]); // See if the link is already in database.
1618 { // Link not in database, let's import it...
1619 if ( empty ( $raw_add_date )) $raw_add_date = time (); // In case of shitty bookmark file with no ADD_DATE
1621 // Make sure date/time is not already used by another link.
1622 // (Some bookmark files have several different links with the same ADD_DATE)
1623 // We increment date by 1 second until we find a date which is not used in db.
1624 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1625 while (! empty ( $LINKSDB [ date ( 'Ymd_His' , $raw_add_date )])) { $raw_add_date++
; } // Yes, I know it's ugly.
1626 $link [ 'linkdate' ]= date ( 'Ymd_His' , $raw_add_date );
1627 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1630 else // link already present in database.
1633 { // If overwrite is required, we import link data, except date/time.
1634 $link [ 'linkdate' ]= $dblink [ 'linkdate' ];
1635 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1645 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) was successfully processed: ' . $import_count . ' links imported.");document.location= \' ? \' ;</script>' ;
1649 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) has an unknown file format. Nothing was imported.");document.location= \' ? \' ;</script>' ;
1653 // -----------------------------------------------------------------------------------------------
1654 // Template for the list of links (<div id="linklist">)
1655 // This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1656 function buildLinkList ( $PAGE , $LINKSDB )
1658 // ---- Filter link database according to parameters
1659 $linksToDisplay = array ();
1662 if ( isset ( $_GET [ 'searchterm' ])) // Fulltext search
1664 $linksToDisplay = $LINKSDB- > filterFulltext ( trim ( $_GET [ 'searchterm' ]));
1665 $search_crits = htmlspecialchars ( trim ( $_GET [ 'searchterm' ]));
1666 $search_type = 'fulltext' ;
1668 elseif ( isset ( $_GET [ 'searchtags' ])) // Search by tag
1670 $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1671 $search_crits = explode ( ' ' , trim ( $_GET [ 'searchtags' ]));
1672 $search_type = 'tags' ;
1674 elseif ( isset ( $_SERVER [ 'QUERY_STRING' ]) && preg_match ( '/[a-zA-Z0-9-_@] {6} (&.+?)?/' , $_SERVER [ 'QUERY_STRING' ])) // Detect smallHashes in URL
1676 $linksToDisplay = $LINKSDB- > filterSmallHash ( substr ( trim ( $_SERVER [ "QUERY_STRING" ], '/' ), 0 , 6 ));
1677 if ( count ( $linksToDisplay )== 0 )
1679 header ( $_SERVER [ "SERVER_PROTOCOL" ]. " 404 Not Found" );
1680 echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.' ;
1681 echo '<br>You would mind <a href="?">clicking here</a> ?' ;
1684 $search_type = 'permalink' ;
1687 $linksToDisplay = $LINKSDB ; // otherwise, display without filtering.
1689 // Option: Show only private links
1690 if (! empty ( $_SESSION [ 'privateonly' ]))
1693 foreach ( $linksToDisplay as $linkdate => $link )
1695 if ( $link [ 'private' ]!= 0 ) $tmp [ $linkdate ]= $link ;
1697 $linksToDisplay = $tmp ;
1700 // ---- Handle paging.
1701 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess ???
1702 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1703 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1705 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // Stupid and ugly. Thanks php.
1707 // If there is only a single link, we change on-the-fly the title of the page.
1708 if ( count ( $linksToDisplay )== 1 ) $GLOBALS [ 'pagetitle' ] = $linksToDisplay [ $keys [ 0 ]][ 'title' ]. ' - ' . $GLOBALS [ 'title' ];
1710 // Select articles according to paging.
1711 $pagecount = ceil ( count ( $keys )/ $_SESSION [ 'LINKS_PER_PAGE' ]);
1712 $pagecount = ( $pagecount == 0 ? 1 : $pagecount );
1713 $page =( empty ( $_GET [ 'page' ]) ? 1 : intval ( $_GET [ 'page' ]));
1714 $page = ( $page < 1 ? 1 : $page );
1715 $page = ( $page > $pagecount ? $pagecount : $page );
1716 $i = ( $page-1 )* $_SESSION [ 'LINKS_PER_PAGE' ]; // Start index.
1717 $end = $i +
$_SESSION [ 'LINKS_PER_PAGE' ];
1718 $linkDisp = array (); // Links to display
1719 while ( $i < $end && $i < count ( $keys ))
1721 $link = $linksToDisplay [ $keys [ $i ]];
1722 $link [ 'description' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))));
1723 $title = $link [ 'title' ];
1724 $classLi = $i %
2 != 0 ? '' : 'publicLinkHightLight' ;
1725 $link [ 'class' ] = ( $link [ 'private' ]== 0 ? $classLi : 'private' );
1726 $link [ 'localdate' ]= linkdate2locale ( $link [ 'linkdate' ]);
1727 $link [ 'taglist' ]= explode ( ' ' , $link [ 'tags' ]);
1728 $linkDisp [ $keys [ $i ]] = $link ;
1732 // Compute paging navigation
1733 $searchterm = ( empty ( $_GET [ 'searchterm' ]) ? '' : '&searchterm=' . $_GET [ 'searchterm' ] );
1734 $searchtags = ( empty ( $_GET [ 'searchtags' ]) ? '' : '&searchtags=' . $_GET [ 'searchtags' ] );
1736 $previous_page_url = '' ; if ( $i != count ( $keys )) $previous_page_url = '?page=' .( $page +
1 ). $searchterm . $searchtags ;
1737 $next_page_url = '' ; if ( $page > 1 ) $next_page_url = '?page=' .( $page-1 ). $searchterm . $searchtags ;
1739 $token = '' ; if ( isLoggedIn ()) $token = getToken ();
1741 // Fill all template fields.
1742 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1743 $PAGE- > assign ( 'previous_page_url' , $previous_page_url );
1744 $PAGE- > assign ( 'next_page_url' , $next_page_url );
1745 $PAGE- > assign ( 'page_current' , $page );
1746 $PAGE- > assign ( 'page_max' , $pagecount );
1747 $PAGE- > assign ( 'result_count' , count ( $linksToDisplay ));
1748 $PAGE- > assign ( 'search_type' , $search_type );
1749 $PAGE- > assign ( 'search_crits' , $search_crits );
1750 $PAGE- > assign ( 'redirector' , empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ]); // optional redirector URL
1751 $PAGE- > assign ( 'token' , $token );
1752 $PAGE- > assign ( 'links' , $linkDisp );
1756 // Compute the thumbnail for a link.
1758 // with a link to the original URL.
1759 // Understands various services (youtube.com...)
1760 // Input: $url = url for which the thumbnail must be found.
1761 // $href = if provided, this URL will be followed instead of $url
1762 // Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1763 // Some of them may be missing.
1764 // Return an empty array if no thumbnail available.
1765 function computeThumbnail ( $url , $href = false )
1767 if (! $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ]) return array ();
1768 if ( $href == false ) $href = $url ;
1770 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1771 // (eg. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1772 // ^^^^^^^^^^^ ^^^^^^^^^^^
1773 $domain = parse_url ( $url , PHP_URL_HOST
);
1774 if ( $domain == 'youtube.com' || $domain == 'www.youtube.com' )
1776 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract video ID and get thumbnail
1777 if (! empty ( $params [ 'v' ])) return array ( 'src' => 'http://img.youtube.com/vi/' . $params [ 'v' ]. '/default.jpg' ,
1778 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1780 if ( $domain == 'youtu.be' ) // Youtube short links
1782 $path = parse_url ( $url , PHP_URL_PATH
);
1783 return array ( 'src' => 'http://img.youtube.com/vi' . $path . '/default.jpg' ,
1784 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1786 if ( $domain == 'pix.toile-libre.org' ) // pix.toile-libre.org image hosting
1788 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract image filename.
1789 if (! empty ( $params ) && ! empty ( $params [ 'img' ])) return array ( 'src' => 'http://pix.toile-libre.org/upload/thumb/' . urlencode ( $params [ 'img' ]),
1790 'href' => $href , 'style' => 'max-width:120px; max-height:150px' , 'alt' => 'pix.toile-libre.org thumbnail' );
1793 if ( $domain == 'imgur.com' )
1795 $path = parse_url ( $url , PHP_URL_PATH
);
1796 if ( startsWith ( $path , '/a/' )) return array (); // Thumbnails for albums are not available.
1797 if ( startsWith ( $path , '/r/' )) return array ( 'src' => 'http://i.imgur.com/' . basename ( $path ). 's.jpg' ,
1798 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1799 if ( startsWith ( $path , '/gallery/' )) return array ( 'src' => 'http://i.imgur.com' . substr ( $path , 8 ). 's.jpg' ,
1800 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1802 if ( substr_count ( $path , '/' )== 1 ) return array ( 'src' => 'http://i.imgur.com/' . substr ( $path , 1 ). 's.jpg' ,
1803 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1805 if ( $domain == 'i.imgur.com' )
1807 $pi = pathinfo ( parse_url ( $url , PHP_URL_PATH
));
1808 if (! empty ( $pi [ 'filename' ])) return array ( 'src' => 'http://i.imgur.com/' . $pi [ 'filename' ]. 's.jpg' ,
1809 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1811 if ( $domain == 'dailymotion.com' || $domain == 'www.dailymotion.com' )
1813 if ( strpos ( $url , 'dailymotion.com/video/' )!== false )
1815 $thumburl = str_replace ( 'dailymotion.com/video/' , 'dailymotion.com/thumbnail/video/' , $url );
1816 return array ( 'src' => $thumburl ,
1817 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'DailyMotion thumbnail' );
1820 if ( endsWith ( $domain , '.imageshack.us' ))
1822 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1823 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1825 $thumburl = substr ( $url , 0 , strlen ( $url )- strlen ( $ext )). 'th.' . $ext ;
1826 return array ( 'src' => $thumburl ,
1827 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'imageshack.us thumbnail' );
1831 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1832 // So we deport the thumbnail generation in order not to slow down page generation
1833 // (and we also cache the thumbnail)
1835 if (! $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ]) return array (); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1837 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' )
1838 || $domain == 'vimeo.com'
1839 || $domain == 'ted.com' || endsWith ( $domain , '.ted.com' )
1840 || $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' )
1843 if ( $domain == 'vimeo.com' )
1844 { // Make sure this vimeo url points to a video (/xxx... where xxx is numeric)
1845 $path = parse_url ( $url , PHP_URL_PATH
);
1846 if (! preg_match ( '!/\d+.+?!' , $path )) return array (); // This is not a single video URL.
1848 if ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
1849 { // Make sure this url points to a single comic (/xxx... where xxx is numeric)
1850 $path = parse_url ( $url , PHP_URL_PATH
);
1851 if (! preg_match ( '!/\d+.+?!' , $path )) return array ();
1853 if ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
1854 { // Make sure this TED url points to a video (/talks/...)
1855 $path = parse_url ( $url , PHP_URL_PATH
);
1856 if ( "/talks/" !== substr ( $path , 0 , 7 )) return array (); // This is not a single video URL.
1858 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1859 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ),
1860 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1863 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1864 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1865 // But using the extension will do.
1866 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1867 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1869 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1870 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ),
1871 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1873 return array (); // No thumbnail.
1878 // Returns the HTML code to display a thumbnail for a link
1879 // with a link to the original URL.
1880 // Understands various services (youtube.com...)
1881 // Input: $url = url for which the thumbnail must be found.
1882 // $href = if provided, this URL will be followed instead of $url
1883 // Returns '' if no thumbnail available.
1884 function thumbnail ( $url , $href = false )
1886 $t = computeThumbnail ( $url , $href );
1887 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1889 $html = '<a href="' . htmlspecialchars ( $t [ 'href' ]). '"><img src="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1890 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1891 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1892 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1893 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1899 // Returns the HTML code to display a thumbnail for a link
1900 // for the picture wall (using lazy image loading)
1901 // Understands various services (youtube.com...)
1902 // Input: $url = url for which the thumbnail must be found.
1903 // $href = if provided, this URL will be followed instead of $url
1904 // Returns '' if no thumbnail available.
1905 function lazyThumbnail ( $url , $href = false )
1907 $t = computeThumbnail ( $url , $href );
1908 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1910 $html = '<a href="' . htmlspecialchars ( $t [ 'href' ]). '">' ;
1912 // Lazy image (only loaded by javascript when in the viewport).
1913 $html .= '<img class="lazyimage" src="#" data-original="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1914 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1915 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1916 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1917 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1920 // No-javascript fallback:
1921 $html .= '<noscript><img src="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1922 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1923 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1924 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1925 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1926 $html .= '></noscript></a>' ;
1932 // -----------------------------------------------------------------------------------------------
1934 // This function should NEVER be called if the file data/config.php exists.
1937 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1938 if ( endsWith ( $_SERVER [ 'SERVER_NAME' ], '.free.fr' ) && ! is_dir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' )) mkdir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' , 0705 );
1940 if (! empty ( $_POST [ 'setlogin' ]) && ! empty ( $_POST [ 'setpassword' ]))
1943 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
1944 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
1945 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
1946 $GLOBALS [ 'timezone' ] = $tz ;
1947 // Everything is ok, let's create config file.
1948 $GLOBALS [ 'login' ] = $_POST [ 'setlogin' ];
1949 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
1950 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1951 $GLOBALS [ 'title' ] = ( empty ( $_POST [ 'title' ]) ? 'Shared links on ' . htmlspecialchars ( indexUrl ()) : $_POST [ 'title' ] );
1953 echo '<script language="JavaScript">alert("Shaarli is now configured. Please enter your login/password and start shaaring your links !");document.location= \' ?do=login \' ;</script>' ;
1957 // Display config form:
1958 list ( $timezone_form , $timezone_js ) = templateTZform ();
1959 $timezone_html = '' ; if ( $timezone_form != '' ) $timezone_html = '<tr><td valign="top"><b>Timezone:</b></td><td>' . $timezone_form . '</td></tr>' ;
1961 $PAGE = new pageBuilder
;
1962 $PAGE- > assign ( 'timezone_html' , $timezone_html );
1963 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1964 $PAGE- > renderPage ( 'install' );
1968 // Generates the timezone selection form and javascript.
1969 // Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
1970 // Output: array(html,js)
1971 // Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
1972 // Returns array('','') if server does not support timezones list. (eg. php 5.1 on free.fr)
1973 function templateTZform ( $ptz = false )
1975 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
1977 // Try to split the provided timezone.
1978 if ( $ptz == false ) { $l
= timezone_identifiers_list (); $ptz
= $l
[ 0 ]; }
1979 $spos = strpos ( $ptz , '/' ); $pcontinent = substr ( $ptz , 0 , $spos ); $pcity = substr ( $ptz , $spos +
1 );
1981 // Display config form:
1982 $timezone_form = '' ;
1984 // The list is in the forme "Europe/Paris", "America/Argentina/Buenos_Aires"...
1985 // We split the list in continents/cities.
1986 $continents = array ();
1988 foreach ( timezone_identifiers_list () as $tz )
1990 if ( $tz == 'UTC' ) $tz = 'UTC/UTC' ;
1991 $spos = strpos ( $tz , '/' );
1994 $continent = substr ( $tz , 0 , $spos ); $city = substr ( $tz , $spos +
1 );
1995 $continents [ $continent ]= 1 ;
1996 if (! isset ( $cities [ $continent ])) $cities [ $continent ]= '' ;
1997 $cities [ $continent ].= '<option value="' . $city . '"' .( $pcity == $city ? 'selected' : '' ). '>' . $city . '</option>' ;
2000 $continents_html = '' ;
2001 $continents = array_keys ( $continents );
2002 foreach ( $continents as $continent )
2003 $continents_html .= '<option value="' . $continent . '"' .( $pcontinent == $continent ? 'selected' : '' ). '>' . $continent . '</option>' ;
2004 $cities_html = $cities [ $pcontinent ];
2005 $timezone_form = "Continent: <select name= \" continent \" id= \" continent \" onChange= \" onChangecontinent(); \" > ${continents_html} </select><br /><br />" ;
2006 $timezone_form .= "City: <select name= \" city \" id= \" city \" > ${cities[$pcontinent]} </select><br /><br />" ;
2007 $timezone_js = "<script language= \" JavaScript \" >" ;
2008 $timezone_js .= "function onChangecontinent() {document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];} " ;
2009 $timezone_js .= "var citiescontinent = " . json_encode ( $cities ). ";" ;
2010 $timezone_js .= "</script>" ;
2011 return array ( $timezone_form , $timezone_js );
2013 return array ( '' , '' );
2016 // Tells if a timezone is valid or not.
2017 // If not valid, returns false.
2018 // If system does not support timezone list, returns false.
2019 function isTZvalid ( $continent , $city )
2021 $tz = $continent . '/' . $city ;
2022 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
2024 if ( in_array ( $tz , timezone_identifiers_list ())) // it's a valid timezone ?
2031 // Webservices (for use with jQuery/jQueryUI)
2032 // eg. index.php?ws=tags&term=minecr
2033 function processWS ()
2035 if ( empty ( $_GET [ 'ws' ]) || empty ( $_GET [ 'term' ])) return ;
2036 $term = $_GET [ 'term' ];
2037 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
2038 header ( 'Content-Type: application/json; charset=utf-8' );
2040 // Search in tags (case insentitive, cumulative search)
2041 if ( $_GET [ 'ws' ]== 'tags' )
2043 $tags = explode ( ' ' , str_replace ( ',' , ' ' , $term )); $last = array_pop ( $tags ); // Get the last term ("a b c d" ==> "a b c", "d")
2044 $addtags = '' ; if ( $tags ) $addtags = implode ( ' ' , $tags ). ' ' ; // We will pre-pend previous tags
2046 /* To speed up things, we store list of tags in session */
2047 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
2048 foreach ( $_SESSION [ 'tags' ] as $key => $value )
2050 if ( startsWith ( $key , $last , $case = false ) && ! in_array ( $key , $tags )) $suggested [ $addtags . $key . ' ' ]= 0 ;
2052 echo json_encode ( array_keys ( $suggested ));
2056 // Search a single tag (case sentitive, single tag search)
2057 if ( $_GET [ 'ws' ]== 'singletag' )
2059 /* To speed up things, we store list of tags in session */
2060 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
2061 foreach ( $_SESSION [ 'tags' ] as $key => $value )
2063 if ( startsWith ( $key , $term , $case = true )) $suggested [ $key ]= 0 ;
2065 echo json_encode ( array_keys ( $suggested ));
2070 // Re-write configuration file according to globals.
2071 // Requires some $GLOBALS to be set (login,hash,salt,title).
2072 // If the config file cannot be saved, an error message is dislayed and the user is redirected to "Tools" menu.
2073 // (otherwise, the function simply returns.)
2074 function writeConfig ()
2076 if ( is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]) && ! isLoggedIn ()) die ( 'You are not authorized to alter config.' ); // Only logged in user can alter config.
2077 if ( empty ( $GLOBALS [ 'redirector' ])) $GLOBALS [ 'redirector' ]= '' ;
2078 if ( empty ( $GLOBALS [ 'disablesessionprotection' ])) $GLOBALS [ 'disablesessionprotection' ]= false ;
2079 $config = '<?php $GLOBALS [ \' login \' ]=' . var_export ( $GLOBALS [ 'login' ], true ). '; $GLOBALS [ \' hash \' ]=' . var_export ( $GLOBALS [ 'hash' ], true ). '; $GLOBALS [ \' salt \' ]=' . var_export ( $GLOBALS [ 'salt' ], true ). '; ' ;
2080 $config .= ' $GLOBALS [ \' timezone \' ]=' . var_export ( $GLOBALS [ 'timezone' ], true ). '; date_default_timezone_set(' . var_export ( $GLOBALS [ 'timezone' ], true ). '); $GLOBALS [ \' title \' ]=' . var_export ( $GLOBALS [ 'title' ], true ). ';' ;
2081 $config .= ' $GLOBALS [ \' redirector \' ]=' . var_export ( $GLOBALS [ 'redirector' ], true ). '; ' ;
2082 $config .= ' $GLOBALS [ \' disablesessionprotection \' ]=' . var_export ( $GLOBALS [ 'disablesessionprotection' ], true ). '; ' ;
2084 if (! file_put_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ], $config ) || strcmp ( file_get_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]), $config )!= 0 )
2086 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>' ;
2091 /* Because some f*cking services like Flickr require an extra HTTP request to get the thumbnail URL,
2092 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
2093 The following function takes the URL a link (eg. a flickr page) and return the proper thumbnail.
2094 This function is called by passing the url:
2095 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
2096 [URL] is the URL of the link (eg. a flickr page)
2097 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2098 The function below will fetch the image from the webservice and store it in the cache.
2100 function genThumbnail ()
2102 // Make sure the parameters in the URL were generated by us.
2103 $sign = hash_hmac ( 'sha256' , $_GET [ 'url' ], $GLOBALS [ 'salt' ]);
2104 if ( $sign != $_GET [ 'hmac' ]) die ( 'Naughty boy !' );
2106 // Let's see if we don't already have the image for this URL in the cache.
2107 $thumbname = hash ( 'sha1' , $_GET [ 'url' ]). '.jpg' ;
2108 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ))
2109 { // We have the thumbnail, just serve it:
2110 header ( 'Content-Type: image/jpeg' );
2111 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname );
2114 // We may also serve a blank image (if service did not respond)
2115 $blankname = hash ( 'sha1' , $_GET [ 'url' ]). '.gif' ;
2116 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname ))
2118 header ( 'Content-Type: image/gif' );
2119 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname );
2123 // Otherwise, generate the thumbnail.
2124 $url = $_GET [ 'url' ];
2125 $domain = parse_url ( $url , PHP_URL_HOST
);
2127 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' ))
2129 // Crude replacement to handle new Flickr domain policy (They prefer www. now)
2130 $url = str_replace ( 'http://flickr.com/' , 'http://www.flickr.com/' , $url );
2132 // Is this a link to an image, or to a flickr page ?
2134 if ( endswith ( parse_url ( $url , PHP_URL_PATH
), '.jpg' ))
2135 { // This is a direct link to an image. eg. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
2136 preg_match ( '!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!' , $url , $matches );
2137 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ]. 'm.jpg' ;
2139 else // this is a flickr page (html)
2141 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 20 ); // Get the flickr html page.
2142 if ( strpos ( $httpstatus , '200 OK' )!== false )
2144 // Flickr now nicely provides the URL of the thumbnail in each flickr page.
2145 preg_match ( '!<link rel= \" image_src \" href= \" (.+?) \" !' , $data , $matches );
2146 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2148 // In albums (and some other pages), the link rel="image_src" is not provided,
2149 // but flickr provides:
2150 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2153 preg_match ( '!<meta property= \" og:image \" content= \" (.+?) \" !' , $data , $matches );
2154 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2160 { // Let's download the image.
2161 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 ); // Image is 240x120, so 10 seconds to download should be enough.
2162 if ( strpos ( $httpstatus , '200 OK' )!== false )
2164 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2165 header ( 'Content-Type: image/jpeg' );
2172 elseif ( $domain == 'vimeo.com' )
2174 // This is more complex: we have to perform a HTTP request, then parse the result.
2175 // Maybe we should deport this to javascript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2176 $vid = substr ( parse_url ( $url , PHP_URL_PATH
), 1 );
2177 list ( $httpstatus , $headers , $data ) = getHTTP ( 'http://vimeo.com/api/v2/video/' . htmlspecialchars ( $vid ). '.php' , 5 );
2178 if ( strpos ( $httpstatus , '200 OK' )!== false )
2180 $t = unserialize ( $data );
2181 $imageurl = $t [ 0 ][ 'thumbnail_medium' ];
2182 // Then we download the image and serve it to our client.
2183 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 );
2184 if ( strpos ( $httpstatus , '200 OK' )!== false )
2186 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2187 header ( 'Content-Type: image/jpeg' );
2194 elseif ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
2196 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2197 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2198 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2199 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2200 if ( strpos ( $httpstatus , '200 OK' )!== false )
2202 // Extract the link to the thumbnail
2203 preg_match ( '!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!' , $data , $matches );
2204 if (! empty ( $matches [ 1 ]))
2205 { // Let's download the image.
2206 $imageurl = $matches [ 1 ];
2207 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2208 if ( strpos ( $httpstatus , '200 OK' )!== false )
2210 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2211 file_put_contents ( $filepath , $data ); // Save image to cache.
2212 if ( resizeImage ( $filepath ))
2214 header ( 'Content-Type: image/jpeg' );
2215 echo file_get_contents ( $filepath );
2223 elseif ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
2225 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2226 // http://xkcd.com/327/
2227 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2228 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2229 if ( strpos ( $httpstatus , '200 OK' )!== false )
2231 // Extract the link to the thumbnail
2232 preg_match ( '!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!' , $data , $matches );
2233 if (! empty ( $matches [ 1 ]))
2234 { // Let's download the image.
2235 $imageurl = $matches [ 1 ];
2236 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2237 if ( strpos ( $httpstatus , '200 OK' )!== false )
2239 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2240 file_put_contents ( $filepath , $data ); // Save image to cache.
2241 if ( resizeImage ( $filepath ))
2243 header ( 'Content-Type: image/jpeg' );
2244 echo file_get_contents ( $filepath );
2254 // For all other domains, we try to download the image and make a thumbnail.
2255 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 30 ); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2256 if ( strpos ( $httpstatus , '200 OK' )!== false )
2258 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2259 file_put_contents ( $filepath , $data ); // Save image to cache.
2260 if ( resizeImage ( $filepath ))
2262 header ( 'Content-Type: image/jpeg' );
2263 echo file_get_contents ( $filepath );
2270 // Otherwise, return an empty image (8x8 transparent gif)
2271 $blankgif = base64_decode ( 'R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7' );
2272 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname , $blankgif ); // Also put something in cache so that this URL is not requested twice.
2273 header ( 'Content-Type: image/gif' );
2277 // Make a thumbnail of the image (to width: 120 pixels)
2278 // Returns true if success, false otherwise.
2279 function resizeImage ( $filepath )
2281 if (! function_exists ( 'imagecreatefromjpeg' )) return false ; // GD not present: no thumbnail possible.
2283 // Trick: some stupid people rename GIF as JPEG... or else.
2284 // So we really try to open each image type whatever the extension is.
2285 $header = file_get_contents ( $filepath , false , NULL , 0 , 256 ); // Read first 256 bytes and try to sniff file type.
2287 $i = strpos ( $header , 'GIF8' ); if (( $i !== false ) && ( $i == 0 )) $im = imagecreatefromgif ( $filepath ); // Well this is crude, but it should be enough.
2288 $i = strpos ( $header , 'PNG' ); if (( $i !== false ) && ( $i == 1 )) $im = imagecreatefrompng ( $filepath );
2289 $i = strpos ( $header , 'JFIF' ); if ( $i !== false ) $im = imagecreatefromjpeg ( $filepath );
2290 if (! $im ) return false ; // Unable to open image (corrupted or not an image)
2293 $ystart = 0 ; $yheight = $h ;
2294 if ( $h > $w ) { $ystart
= ( $h
/ 2 )-( $w
/ 2 ); $yheight
= $w
/ 2 ; }
2295 $nw = 120 ; // Desired width
2296 $nh = min ( floor (( $h * $nw )/ $w ), 120 ); // Compute new width/height, but maximum 120 pixels height.
2298 $im2 = imagecreatetruecolor ( $nw , $nh );
2299 imagecopyresampled ( $im2 , $im , 0 , 0 , 0 , $ystart , $nw , $nh , $w , $yheight );
2300 imageinterlace ( $im2 , true ); // For progressive JPEG.
2301 $tempname = $filepath . '_TEMP.jpg' ;
2302 imagejpeg ( $im2 , $tempname , 90 );
2305 rename ( $tempname , $filepath ); // Overwrite original picture with thumbnail.
2309 // Invalidate caches when the database is changed or the user logs out.
2310 // (eg. tags cache).
2311 function invalidateCaches ()
2313 unset ( $_SESSION [ 'tags' ]); // Purge cache attached to session.
2314 pageCache
:: purgeCache (); // Purge page cache shared by sessions.
2317 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=genthumbnail' )) { genThumbnail (); exit ; } // Thumbnail generation/cache does not need the link database.
2318 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=rss' )) { showRSS (); exit ; }
2319 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=atom' )) { showATOM (); exit ; }
2320 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=dailyrss' )) { showDailyRSS (); exit ; }
2321 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=daily' )) { showDaily (); exit ; }
2322 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'ws=' )) { processWS (); exit ; } // Webservices (for jQuery/jQueryUI)
2323 if (! isset ( $_SESSION [ 'LINKS_PER_PAGE' ])) $_SESSION [ 'LINKS_PER_PAGE' ]= $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ];