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git.immae.eu Git - github/shaarli/Shaarli.git/blob - index.php
2 // Shaarli 0.0.40 beta - Shaare your links...
3 // The personal, minimalist, super-fast, no-database delicious clone. By sebsauvage.net
4 // http://sebsauvage.net/wiki/doku.php?id=php:shaarli
5 // Licence: http://www.opensource.org/licenses/zlib-license.php
6 // Requires: php 5.1.x (but autocomplete fields will only work if you have php 5.2.x)
7 // -----------------------------------------------------------------------------------------------
8 // Hardcoded parameter (These parameters can be overwritten by creating the file /config/options.php)
9 $GLOBALS [ 'config' ][ 'DATADIR' ] = 'data' ; // Data subdirectory
10 $GLOBALS [ 'config' ][ 'CONFIG_FILE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/config.php' ; // Configuration file (user login/password)
11 $GLOBALS [ 'config' ][ 'DATASTORE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/datastore.php' ; // Data storage file.
12 $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ] = 20 ; // Default links per page.
13 $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/ipbans.php' ; // File storage for failures and bans.
14 $GLOBALS [ 'config' ][ 'BAN_AFTER' ] = 4 ; // Ban IP after this many failures.
15 $GLOBALS [ 'config' ][ 'BAN_DURATION' ] = 1800 ; // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
16 $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ] = false ; // If true, anyone can add/edit/delete links without having to login
17 $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] = false ; // If true, the moment when links were saved are not shown to users that are not logged in.
18 $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ] = true ; // Enable thumbnails in links.
19 $GLOBALS [ 'config' ][ 'CACHEDIR' ] = 'cache' ; // Cache directory for thumbnails for SLOW services (like flickr)
20 $GLOBALS [ 'config' ][ 'PAGECACHE' ] = 'pagecache' ; // Page cache directory.
21 $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ] = true ; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce webspace usage.
22 $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ] = '' ; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
23 $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/lastupdatecheck.txt' ; // For updates check of Shaarli.
24 $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ] = 86400 ; // Updates check frequency for Shaarli. 86400 seconds=24 hours
25 // Note: You must have publisher.php in the same directory as Shaarli index.php
26 // -----------------------------------------------------------------------------------------------
27 // You should not touch below (or at your own risks !)
28 // Optionnal config file.
29 if ( is_file ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' )) require ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' );
31 define ( 'shaarli_version' , '0.0.40 beta' );
32 define ( 'PHPPREFIX' , '<?php /* ' ); // Prefix to encapsulate data in php code.
33 define ( 'PHPSUFFIX' , ' */ ?>' ); // Suffix to encapsulate data in php code.
35 // Force cookie path (but do not change lifetime)
36 $cookie = session_get_cookie_params ();
37 $cookiedir = '' ; if ( dirname ( $_SERVER [ 'SCRIPT_NAME' ])!= '/' ) $cookiedir = dirname ( $_SERVER [ "SCRIPT_NAME" ]). '/' ;
38 session_set_cookie_params ( $cookie [ 'lifetime' ], $cookiedir ); // Set default cookie expiration and path.
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 least 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' ]);
175 if ( $handler !== false )
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:|magnet:)\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 $scriptname = $_SERVER [ "SCRIPT_NAME" ];
431 // If the script is named 'index.php', we remove it (for better looking URLs,
432 // eg. http://mysite.com/shaarli/?abcde instead of http://mysite.com/shaarli/index.php?abcde)
433 if ( endswith ( $scriptname , 'index.php' )) $scriptname = substr ( $scriptname , 0 , strlen ( $scriptname )- 9 );
434 return serverUrl () . $scriptname ;
437 // Returns the absolute URL of current script, WITH the query.
438 // (eg. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
441 return indexUrl ().(! empty ( $_SERVER [ "QUERY_STRING" ]) ? '?' . $_SERVER [ "QUERY_STRING" ] : '' );
444 // Convert post_max_size/upload_max_filesize (eg.'16M') parameters to bytes.
445 function return_bytes ( $val )
447 $val = trim ( $val ); $last = strtolower ( $val [ strlen ( $val )- 1 ]);
450 case 'g' : $val *= 1024 ;
451 case 'm' : $val *= 1024 ;
452 case 'k' : $val *= 1024 ;
457 // Try to determine max file size for uploads (POST).
458 // Returns an integer (in bytes)
459 function getMaxFileSize ()
461 $size1 = return_bytes ( ini_get ( 'post_max_size' ));
462 $size2 = return_bytes ( ini_get ( 'upload_max_filesize' ));
463 // Return the smaller of two:
464 $maxsize = min ( $size1 , $size2 );
465 // FIXME: Then convert back to readable notations ? (eg. 2M instead of 2000000)
469 // Tells if a string start with a substring or not.
470 function startsWith ( $haystack , $needle , $case = true )
472 if ( $case ){ return ( strcmp ( substr ( $haystack
, 0 , strlen ( $needle
)), $needle
)=== 0 );}
473 return ( strcasecmp ( substr ( $haystack , 0 , strlen ( $needle )), $needle )=== 0 );
476 // Tells if a string ends with a substring or not.
477 function endsWith ( $haystack , $needle , $case = true )
479 if ( $case ){ return ( strcmp ( substr ( $haystack
, strlen ( $haystack
) - strlen ( $needle
)), $needle
)=== 0 );}
480 return ( strcasecmp ( substr ( $haystack , strlen ( $haystack ) - strlen ( $needle )), $needle )=== 0 );
483 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
484 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
485 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
486 function linkdate2timestamp ( $linkdate )
489 $r = sscanf ( $linkdate , '%4d%2d%2d_%2d%2d%2d' , $Y , $M , $D , $h , $m , $s );
490 return mktime ( $h , $m , $s , $M , $D , $Y );
493 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
494 (used to build the pubDate attribute in RSS feed.) */
495 function linkdate2rfc822 ( $linkdate )
497 return date ( 'r' , linkdate2timestamp ( $linkdate )); // 'r' is for RFC822 date format.
500 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
501 (used to build the updated tags in ATOM feed.) */
502 function linkdate2iso8601 ( $linkdate )
504 return date ( 'c' , linkdate2timestamp ( $linkdate )); // 'c' is for ISO 8601 date format.
507 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a localized date format.
508 (used to display link date on screen)
509 The date format is automatically chosen according to locale/languages sniffed from browser headers (see autoLocale()). */
510 function linkdate2locale ( $linkdate )
512 return utf8_encode ( strftime ( '%c' , linkdate2timestamp ( $linkdate ))); // %c is for automatic date format according to locale.
513 // Note that if you use a local which is not installed on your webserver,
514 // the date will not be displayed in the chosen locale, but probably in US notation.
517 // Parse HTTP response headers and return an associative array.
518 function http_parse_headers_shaarli ( $headers )
521 foreach ( $headers as $header )
523 $i = strpos ( $header , ': ' );
526 $key = substr ( $header , 0 , $i );
527 $value = substr ( $header , $i +
2 , strlen ( $header )- $i-2 );
535 Input: $url : url to get (http://...)
536 $timeout : Network timeout (will wait this many seconds for an anwser before giving up).
537 Output: An array. [0] = HTTP status message (eg. "HTTP/1.1 200 OK") or error message
538 [1] = associative array containing HTTP response headers (eg. echo getHTTP($url)[1]['Content-Type'])
540 Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
541 if (strpos($httpstatus,'200 OK')!==false)
542 echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
544 echo 'There was an error: '.htmlspecialchars($httpstatus)
546 function getHTTP ( $url , $timeout = 30 )
550 $options = array ( 'http' => array ( 'method' => 'GET' , 'timeout' => $timeout )); // Force network timeout
551 $context = stream_context_create ( $options );
552 $data = file_get_contents ( $url , false , $context ,- 1 , 4000000 ); // We download at most 4 Mb from source.
553 if (! $data ) { return array ( 'HTTP Error' , array (), '' ); }
554 $httpStatus = $http_response_header [ 0 ]; // eg. "HTTP/1.1 200 OK"
555 $responseHeaders = http_parse_headers_shaarli ( $http_response_header );
556 return array ( $httpStatus , $responseHeaders , $data );
558 catch ( Exception
$e ) // getHTTP *can* fail silentely (we don't care if the title cannot be fetched)
560 return array ( $e- > getMessage (), '' , '' );
564 // Extract title from an HTML document.
565 // (Returns an empty string if not found.)
566 function html_extract_title ( $html )
568 return preg_match ( '!<title>(.*?)</title>!is' , $html , $matches ) ? trim ( str_replace ( " \n " , ' ' , $matches [ 1 ])) : '' ;
571 // ------------------------------------------------------------------------------------------
572 // Token management for XSRF protection
573 // Token should be used in any form which acts on data (create,update,delete,import...).
574 if (! isset ( $_SESSION [ 'tokens' ])) $_SESSION [ 'tokens' ]= array (); // Token are attached to the session.
579 $rnd = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // We generate a random string.
580 $_SESSION [ 'tokens' ][ $rnd ]= 1 ; // Store it on the server side.
584 // Tells if a token is ok. Using this function will destroy the token.
586 function tokenOk ( $token )
588 if ( isset ( $_SESSION [ 'tokens' ][ $token ]))
590 unset ( $_SESSION [ 'tokens' ][ $token ]); // Token is used: destroy it.
591 return true ; // Token is ok.
593 return false ; // Wrong token, or already used.
596 // ------------------------------------------------------------------------------------------
597 /* This class is in charge of building the final page.
598 (This is basically a wrapper around RainTPL which pre-fills some fields.)
600 p.assign('myfield','myvalue');
601 p.renderPage('mytemplate');
606 private $tpl ; // RainTPL template
608 function __construct ()
613 private function initialize ()
615 $this- > tpl
= new RainTPL
;
616 $this- > tpl
-> assign ( 'newversion' , checkUpdate ());
617 $this- > tpl
-> assign ( 'feedurl' , htmlspecialchars ( indexUrl ()));
618 $searchcrits = '' ; // Search criteria
619 if (! empty ( $_GET [ 'searchtags' ])) $searchcrits .= '&searchtags=' . urlencode ( $_GET [ 'searchtags' ]);
620 elseif (! empty ( $_GET [ 'searchterm' ])) $searchcrits .= '&searchterm=' . urlencode ( $_GET [ 'searchterm' ]);
621 $this- > tpl
-> assign ( 'searchcrits' , $searchcrits );
622 $this- > tpl
-> assign ( 'source' , indexUrl ());
623 $this- > tpl
-> assign ( 'version' , shaarli_version
);
624 $this- > tpl
-> assign ( 'scripturl' , indexUrl ());
625 $this- > tpl
-> assign ( 'pagetitle' , 'Shaarli' );
626 $this- > tpl
-> assign ( 'privateonly' ,! empty ( $_SESSION [ 'privateonly' ])); // Show only private links ?
627 if (! empty ( $GLOBALS [ 'title' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'title' ]);
628 if (! empty ( $GLOBALS [ 'pagetitle' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'pagetitle' ]);
629 $this- > tpl
-> assign ( 'shaarlititle' , empty ( $GLOBALS [ 'title' ]) ? 'Shaarli' : $GLOBALS [ 'title' ] );
633 // The following assign() method is basically the same as RainTPL (except that it's lazy)
634 public function assign ( $what , $where )
636 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
637 $this- > tpl
-> assign ( $what , $where );
640 // Render a specific page (using a template).
641 // eg. pb.renderPage('picwall')
642 public function renderPage ( $page )
644 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
645 $this- > tpl
-> draw ( $page );
649 // ------------------------------------------------------------------------------------------
650 /* Data storage for links.
651 This object behaves like an associative array.
653 $mylinks = new linkdb();
654 echo $mylinks['20110826_161819']['title'];
655 foreach($mylinks as $link)
656 echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description'];
659 title : Title of the link
660 url : URL of the link. Can be absolute or relative. Relative URLs are permalinks (eg.'?m-ukcw')
661 description : description of the entry
662 private : Is this link private ? 0=no, other value=yes
663 linkdate : date of the creation of this entry, in the form YYYYMMDD_HHMMSS (eg.'20110914_192317')
664 tags : tags attached to this entry (separated by spaces)
666 We implement 3 interfaces:
667 - ArrayAccess so that this object behaves like an associative array.
668 - Iterator so that this object can be used in foreach() loops.
669 - Countable interface so that we can do a count() on this object.
671 class linkdb
implements Iterator
, Countable
, ArrayAccess
673 private $links ; // List of links (associative array. Key=linkdate (eg. "20110823_124546"), value= associative array (keys:title,description...)
674 private $urls ; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate)
675 private $keys ; // List of linkdate keys (for the Iterator interface implementation)
676 private $position ; // Position in the $this->keys array. (for the Iterator interface implementation.)
677 private $loggedin ; // Is the used logged in ? (used to filter private links)
680 function __construct ( $isLoggedIn )
681 // Input : $isLoggedIn : is the used logged in ?
683 $this- > loggedin
= $isLoggedIn ;
684 $this- > checkdb (); // Make sure data file exists.
685 $this- > readdb (); // Then read it.
688 // ---- Countable interface implementation
689 public function count () { return count ( $this
-> links
); }
691 // ---- ArrayAccess interface implementation
692 public function offsetSet ( $offset , $value )
694 if (! $this- > loggedin
) die ( 'You are not authorized to add a link.' );
695 if ( empty ( $value [ 'linkdate' ]) || empty ( $value [ 'url' ])) die ( 'Internal Error: A link should always have a linkdate and url.' );
696 if ( empty ( $offset )) die ( 'You must specify a key.' );
697 $this- > links
[ $offset ] = $value ;
698 $this- > urls
[ $value [ 'url' ]]= $offset ;
700 public function offsetExists ( $offset ) { return array_key_exists ( $offset
, $this
-> links
); }
701 public function offsetUnset ( $offset )
703 if (! $this- > loggedin
) die ( 'You are not authorized to delete a link.' );
704 $url = $this- > links
[ $offset ][ 'url' ]; unset ( $this- > urls
[ $url ]);
705 unset ( $this- > links
[ $offset ]);
707 public function offsetGet ( $offset ) { return isset ( $this
-> links
[ $offset
]) ? $this
-> links
[ $offset
] : null ; }
709 // ---- Iterator interface implementation
710 function rewind () { $this
-> keys
= array_keys ( $this
-> links
); rsort ( $this
-> keys
); $this
-> position
= 0 ; } // Start over for iteration, ordered by date (latest first).
711 function key () { return $this
-> keys
[ $this
-> position
]; } // current key
712 function current () { return $this
-> links
[ $this
-> keys
[ $this
-> position
]]; } // current value
713 function next () { ++$this
-> position
; } // go to next item
714 function valid () { return isset ( $this
-> keys
[ $this
-> position
]); } // Check if current position is valid.
717 private function checkdb () // Check if db directory and file exists.
719 if (! file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ])) // Create a dummy database for example.
721 $this- > links
= array ();
722 $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' );
723 $this- > links
[ $link [ 'linkdate' ]] = $link ;
724 $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' );
725 $this- > links
[ $link [ 'linkdate' ]] = $link ;
726 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
); // Write database to disk
730 // Read database from disk to memory
731 private function readdb ()
734 $this- > links
=( file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ]) ? unserialize ( gzinflate ( base64_decode ( substr ( file_get_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ]), strlen ( PHPPREFIX
),- strlen ( PHPSUFFIX
))))) : array () );
735 // Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439
737 // If user is not logged in, filter private links.
738 if (! $this- > loggedin
)
741 foreach ( $this- > links
as $link ) { if ( $link
[ 'private' ]!= 0 ) $toremove
[]= $link
[ 'linkdate' ]; }
742 foreach ( $toremove as $linkdate ) { unset ( $this
-> links
[ $linkdate
]); }
745 // Keep the list of the mapping URLs-->linkdate up-to-date.
747 foreach ( $this- > links
as $link ) { $this
-> urls
[ $link
[ 'url' ]]= $link
[ 'linkdate' ]; }
750 // Save database from memory to disk.
751 public function savedb ()
753 if (! $this- > loggedin
) die ( 'You are not authorized to change the database.' );
754 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
);
758 // Returns the link for a given URL (if it exists). false it does not exist.
759 public function getLinkFromUrl ( $url )
761 if ( isset ( $this- > urls
[ $url ])) return $this- > links
[ $this- > urls
[ $url ]];
765 // Case insentitive search among links (in url, title and description). Returns filtered list of links.
766 // eg. print_r($mydb->filterFulltext('hollandais'));
767 public function filterFulltext ( $searchterms )
769 // FIXME: explode(' ',$searchterms) and perform a AND search.
770 // FIXME: accept double-quotes to search for a string "as is" ?
772 $s = strtolower ( $searchterms );
773 foreach ( $this- > links
as $l )
775 $found = ( strpos ( strtolower ( $l [ 'title' ]), $s )!== false )
776 || ( strpos ( strtolower ( $l [ 'description' ]), $s )!== false )
777 || ( strpos ( strtolower ( $l [ 'url' ]), $s )!== false )
778 || ( strpos ( strtolower ( $l [ 'tags' ]), $s )!== false );
779 if ( $found ) $filtered [ $l [ 'linkdate' ]] = $l ;
786 // You can specify one or more tags (tags can be separated by space or comma).
787 // eg. print_r($mydb->filterTags('linux programming'));
788 public function filterTags ( $tags , $casesensitive = false )
790 $t = str_replace ( ',' , ' ' ,( $casesensitive ? $tags : strtolower ( $tags )));
791 $searchtags = explode ( ' ' , $t );
793 foreach ( $this- > links
as $l )
795 $linktags = explode ( ' ' ,( $casesensitive ? $l [ 'tags' ]: strtolower ( $l [ 'tags' ])));
796 if ( count ( array_intersect ( $linktags , $searchtags )) == count ( $searchtags ))
797 $filtered [ $l [ 'linkdate' ]] = $l ;
803 // Filter by day. Day must be in the form 'YYYYMMDD' (eg. '20120125')
804 // Sort order is: older articles first.
805 // eg. print_r($mydb->filterDay('20120125'));
806 public function filterDay ( $day )
809 foreach ( $this- > links
as $l )
811 if ( startsWith ( $l [ 'linkdate' ], $day )) $filtered [ $l [ 'linkdate' ]] = $l ;
816 // Filter by smallHash.
817 // Only 1 article is returned.
818 public function filterSmallHash ( $smallHash )
821 foreach ( $this- > links
as $l )
823 if ( $smallHash == smallHash ( $l [ 'linkdate' ])) // Yes, this is ugly and slow
825 $filtered [ $l [ 'linkdate' ]] = $l ;
832 // Returns the list of all tags
833 // Output: associative array key=tags, value=0
834 public function allTags ()
837 foreach ( $this- > links
as $link )
838 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
839 if (! empty ( $tag )) $tags [ $tag ]=( empty ( $tags [ $tag ]) ? 1 : $tags [ $tag ] +
1 );
840 arsort ( $tags ); // Sort tags by usage (most used tag first)
844 // Returns the list of days containing articles (oldest first)
845 // Output: An array containing days (in format YYYYMMDD).
846 public function days ()
849 foreach ( array_keys ( $this- > links
) as $day )
851 $linkdays [ substr ( $day , 0 , 8 )]= 0 ;
853 $linkdays = array_keys ( $linkdays );
859 // ------------------------------------------------------------------------------------------
860 // Ouput the last 50 links in RSS 2.0 format.
863 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
865 // $usepermalink : If true, use permalink instead of final link.
866 // User just has to add 'permalink' in URL parameters. eg. http://mysite.com/shaarli/?do=rss&permalinks
867 $usepermalinks = isset ( $_GET [ 'permalinks' ]);
870 $query = $_SERVER [ "QUERY_STRING" ];
871 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=rss' ) && ! isLoggedIn ());
872 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
874 // If cached was not found (or not usable), then read the database and build the response:
875 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
877 // Optionnaly filter the results:
878 $linksToDisplay = array ();
879 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
880 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
881 else $linksToDisplay = $LINKSDB ;
883 $pageaddr = htmlspecialchars ( indexUrl ());
884 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">' ;
885 echo '<channel><title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title><link>' . $pageaddr . '</link>' ;
886 echo '<description>Shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n\n " ;
887 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
889 echo '<!-- PubSubHubbub Discovery -->' ;
890 echo '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" xmlns="http://www.w3.org/2005/Atom" />' ;
891 echo '<link rel="self" href="' . htmlspecialchars ( $pageaddr ). '?do=rss" xmlns="http://www.w3.org/2005/Atom" />' ;
892 echo '<!-- End Of PubSubHubbub Discovery -->' ;
895 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
896 while ( $i < 50 && $i < count ( $keys ))
898 $link = $linksToDisplay [ $keys [ $i ]];
899 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
900 $rfc822date = linkdate2rfc822 ( $link [ 'linkdate' ]);
901 $absurl = htmlspecialchars ( $link [ 'url' ]);
902 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
903 if ( $usepermalinks === true )
904 echo '<item><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><guid>' . $guid . '</guid><link>' . $guid . '</link>' ;
906 echo '<item><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><guid>' . $guid . '</guid><link>' . $absurl . '</link>' ;
907 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) echo '<pubDate>' . htmlspecialchars ( $rfc822date ). "</pubDate> \n " ;
908 if ( $link [ 'tags' ]!= '' ) // Adding tags to each RSS entry (as mentioned in RSS specification)
910 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag ) { echo '<category domain="' . htmlspecialchars ( $pageaddr
). '">' . htmlspecialchars ( $tag
). '</category>' . " \n " ; }
913 // Add permalink in description
914 $descriptionlink = '(<a href="' . $guid . '">Permalink</a>)' ;
915 // If user wants permalinks first, put the final link in description
916 if ( $usepermalinks === true ) $descriptionlink = '(<a href="' . $absurl . '">Link</a>)' ;
917 if ( strlen ( $link [ 'description' ])> 0 ) $descriptionlink = '<br>' . $descriptionlink ;
918 echo '<description><![CDATA[' . nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ])))). $descriptionlink . ']]></description>' . " \n </item> \n " ;
921 echo '</channel></rss>' ;
923 $cache- > cache ( ob_get_contents ());
928 // ------------------------------------------------------------------------------------------
929 // Ouput the last 50 links in ATOM format.
932 header ( 'Content-Type: application/atom+xml; charset=utf-8' );
934 // $usepermalink : If true, use permalink instead of final link.
935 // User just has to add 'permalink' in URL parameters. eg. http://mysite.com/shaarli/?do=atom&permalinks
936 $usepermalinks = isset ( $_GET [ 'permalinks' ]);
939 $query = $_SERVER [ "QUERY_STRING" ];
940 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=atom' ) && ! isLoggedIn ());
941 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
942 // If cached was not found (or not usable), then read the database and build the response:
944 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
947 // Optionnaly filter the results:
948 $linksToDisplay = array ();
949 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
950 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
951 else $linksToDisplay = $LINKSDB ;
953 $pageaddr = htmlspecialchars ( indexUrl ());
957 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
958 while ( $i < 50 && $i < count ( $keys ))
960 $link = $linksToDisplay [ $keys [ $i ]];
961 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
962 $iso8601date = linkdate2iso8601 ( $link [ 'linkdate' ]);
963 $latestDate = max ( $latestDate , $iso8601date );
964 $absurl = htmlspecialchars ( $link [ 'url' ]);
965 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
966 $entries .= '<entry><title>' . htmlspecialchars ( $link [ 'title' ]). '</title>' ;
967 if ( $usepermalinks === true )
968 $entries .= '<link href="' . $guid . '" /><id>' . $guid . '</id>' ;
970 $entries .= '<link href="' . $absurl . '" /><id>' . $guid . '</id>' ;
971 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $entries .= '<updated>' . htmlspecialchars ( $iso8601date ). '</updated>' ;
973 // Add permalink in description
974 $descriptionlink = htmlspecialchars ( '(<a href="' . $guid . '">Permalink</a>)' );
975 // If user wants permalinks first, put the final link in description
976 if ( $usepermalinks === true ) $descriptionlink = htmlspecialchars ( '(<a href="' . $absurl . '">Link</a>)' );
977 if ( strlen ( $link [ 'description' ])> 0 ) $descriptionlink = '<br>' . $descriptionlink ;
979 $entries .= '<content type="html">' . htmlspecialchars ( nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))))). $descriptionlink . "</content> \n " ;
980 if ( $link [ 'tags' ]!= '' ) // Adding tags to each ATOM entry (as mentioned in ATOM specification)
982 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
983 { $entries
.= '<category scheme="' . htmlspecialchars ( $pageaddr
, ENT_QUOTES
). '" term="' . htmlspecialchars ( $tag
, ENT_QUOTES
). '" />' . " \n " ; }
985 $entries .= "</entry> \n " ;
988 $feed = '<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">' ;
989 $feed .= '<title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title>' ;
990 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $feed .= '<updated>' . htmlspecialchars ( $latestDate ). '</updated>' ;
991 $feed .= '<link rel="self" href="' . htmlspecialchars ( serverUrl (). $_SERVER [ "REQUEST_URI" ]). '" />' ;
992 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
994 $feed .= '<!-- PubSubHubbub Discovery -->' ;
995 $feed .= '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" />' ;
996 $feed .= '<!-- End Of PubSubHubbub Discovery -->' ;
998 $feed .= '<author><name>' . htmlspecialchars ( $pageaddr ). '</name><uri>' . htmlspecialchars ( $pageaddr ). '</uri></author>' ;
999 $feed .= '<id>' . htmlspecialchars ( $pageaddr ). '</id>' . " \n\n " ; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
1004 $cache- > cache ( ob_get_contents ());
1009 // ------------------------------------------------------------------------------------------
1010 // Daily RSS feed: 1 RSS entry per day giving all the links on that day.
1011 // Gives the last 7 days (which have links).
1012 // This RSS feed cannot be filtered.
1013 function showDailyRSS ()
1016 $query = $_SERVER [ "QUERY_STRING" ];
1017 $cache = new pageCache ( pageUrl (), startsWith ( $query , 'do=dailyrss' ) && ! isLoggedIn ());
1018 $cached = $cache- > cachedVersion (); if (! empty ( $cached )) { echo $cached
; exit ; }
1019 // If cached was not found (or not usable), then read the database and build the response:
1020 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1022 /* Some Shaarlies may have very few links, so we need to look
1023 back in time (rsort()) until we have enough days ($nb_of_days).
1025 $linkdates = array (); foreach ( $LINKSDB as $linkdate => $value ) { $linkdates
[]= $linkdate
; }
1027 $nb_of_days = 7 ; // We take 7 days.
1030 foreach ( $linkdates as $linkdate )
1032 $day = substr ( $linkdate , 0 , 8 ); // Extract day (without time)
1033 if ( strcmp ( $day , $today )< 0 )
1035 if ( empty ( $days [ $day ])) $days [ $day ]= array ();
1036 $days [ $day ][]= $linkdate ;
1038 if ( count ( $days )> $nb_of_days ) break ; // Have we collected enough days ?
1041 // Build the RSS feed.
1042 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
1043 $pageaddr = htmlspecialchars ( indexUrl ());
1044 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">' ;
1045 echo '<channel><title>Daily - ' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title><link>' . $pageaddr . '</link>' ;
1046 echo '<description>Daily shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n " ;
1048 foreach ( $days as $day => $linkdates ) // For each day.
1050 $daydate = utf8_encode ( strftime ( '%A %d, %B %Y' , linkdate2timestamp ( $day . '_000000' ))); // Full text date
1051 $rfc822date = linkdate2rfc822 ( $day . '_000000' );
1052 $absurl = htmlspecialchars ( indexUrl (). '?do=daily&day=' . $day ); // Absolute URL of the corresponding "Daily" page.
1053 echo '<item><title>' . htmlspecialchars ( $GLOBALS [ 'title' ]. ' - ' . $daydate ). '</title><guid>' . $absurl . '</guid><link>' . $absurl . '</link>' ;
1054 echo '<pubDate>' . htmlspecialchars ( $rfc822date ). "</pubDate>" ;
1056 // Build the HTML body of this RSS entry.
1060 // We pre-format some fields for proper output.
1061 foreach ( $linkdates as $linkdate )
1063 $l = $LINKSDB [ $linkdate ];
1064 $l [ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $l [ 'description' ]))));
1065 $l [ 'thumbnail' ] = thumbnail ( $l [ 'url' ]);
1066 $l [ 'localdate' ]= linkdate2locale ( $l [ 'linkdate' ]);
1067 if ( startsWith ( $l [ 'url' ], '?' )) $l [ 'url' ]= indexUrl (). $l [ 'url' ]; // make permalink URL absolute
1068 $links [ $linkdate ]= $l ;
1070 // Then build the HTML for this day:
1072 $tpl- > assign ( 'links' , $links );
1073 $html = $tpl- > draw ( 'dailyrss' , $return_string = true );
1075 echo '<description><![CDATA[' . $html . ']]></description>' . " \n </item> \n\n " ;
1078 echo '</channel></rss>' ;
1080 $cache- > cache ( ob_get_contents ());
1086 function showDaily ()
1088 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1091 $day = Date ( 'Ymd' , strtotime ( '-1 day' )); // Yesterday, in format YYYYMMDD.
1092 if ( isset ( $_GET [ 'day' ])) $day = $_GET [ 'day' ];
1094 $days = $LINKSDB- > days ();
1095 $i = array_search ( $day , $days );
1096 if ( $i == false ) { $i
= count ( $days
)- 1 ; $day
= $days
[ $i
]; }
1101 if ( $i > 1 ) $previousday = $days [ $i-1 ];
1102 if ( $i < count ( $days )- 1 ) $nextday = $days [ $i +
1 ];
1105 $linksToDisplay = $LINKSDB- > filterDay ( $day );
1106 // We pre-format some fields for proper output.
1107 foreach ( $linksToDisplay as $key => $link )
1109 $linksToDisplay [ $key ][ 'taglist' ]= explode ( ' ' , $link [ 'tags' ]);
1110 $linksToDisplay [ $key ][ 'formatedDescription' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))));
1111 $linksToDisplay [ $key ][ 'thumbnail' ] = thumbnail ( $link [ 'url' ]);
1114 /* We need to spread the articles on 3 columns.
1115 I did not want to use a javascript lib like http://masonry.desandro.com/
1116 so I manually spread entries with a simple method: I roughly evaluate the
1117 height of a div according to title and description length.
1119 $columns = array ( array (), array (), array ()); // Entries to display, for each column.
1120 $fill = array ( 0 , 0 , 0 ); // Rough estimate of columns fill.
1121 foreach ( $linksToDisplay as $key => $link )
1123 // Roughly estimate length of entry (by counting characters)
1124 // Title: 30 chars = 1 line. 1 line is 30 pixels height.
1125 // Description: 836 characters gives roughly 342 pixel height.
1126 // This is not perfect, but it's usually ok.
1127 $length = strlen ( $link [ 'title' ]) +
( 342 * strlen ( $link [ 'description' ]))/ 836 ;
1128 if ( $link [ 'thumbnail' ]) $length +
= 100 ; // 1 thumbnails roughly takes 100 pixels height.
1129 // Then put in column which is the less filled:
1130 $smallest = min ( $fill ); // find smallest value in array.
1131 $index = array_search ( $smallest , $fill ); // find index of this smallest value.
1132 array_push ( $columns [ $index ], $link ); // Put entry in this column.
1133 $fill [ $index ] +
= $length ;
1135 $PAGE = new pageBuilder
;
1136 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1137 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1138 $PAGE- > assign ( 'col1' , $columns [ 0 ]);
1139 $PAGE- > assign ( 'col1' , $columns [ 0 ]);
1140 $PAGE- > assign ( 'col2' , $columns [ 1 ]);
1141 $PAGE- > assign ( 'col3' , $columns [ 2 ]);
1142 $PAGE- > assign ( 'day' , utf8_encode ( strftime ( '%A %d, %B %Y' , linkdate2timestamp ( $day . '_000000' ))));
1143 $PAGE- > assign ( 'previousday' , $previousday );
1144 $PAGE- > assign ( 'nextday' , $nextday );
1145 $PAGE- > renderPage ( 'daily' );
1150 // ------------------------------------------------------------------------------------------
1151 // Render HTML page (according to URL parameters and user rights)
1152 function renderPage ()
1154 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1156 // -------- Display login form.
1157 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=login' ))
1159 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) { header ( 'Location: ?' ); exit ; } // No need to login for open Shaarli
1160 $token = '' ; if ( ban_canLogin ()) $token = getToken (); // Do not waste token generation if not useful.
1161 $PAGE = new pageBuilder
;
1162 $PAGE- > assign ( 'token' , $token );
1163 $PAGE- > assign ( 'returnurl' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ]: '' ));
1164 $PAGE- > renderPage ( 'loginform' );
1167 // -------- User wants to logout.
1168 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=logout' ))
1172 header ( 'Location: ?' );
1176 // -------- Picture wall
1177 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=picwall' ))
1179 // Optionnaly filter the results:
1181 if (! empty ( $_GET [ 'searchterm' ])) $links = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
1182 elseif (! empty ( $_GET [ 'searchtags' ])) $links = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1183 else $links = $LINKSDB ;
1185 $linksToDisplay = array ();
1187 // Get only links which have a thumbnail.
1188 foreach ( $links as $link )
1190 $permalink = '?' . htmlspecialchars ( smallhash ( $link [ 'linkdate' ]), ENT_QUOTES
);
1191 $thumb = lazyThumbnail ( $link [ 'url' ], $permalink );
1192 if ( $thumb != '' ) // Only output links which have a thumbnail.
1194 $link [ 'thumbnail' ]= $thumb ; // Thumbnail HTML code.
1195 $link [ 'permalink' ]= $permalink ;
1196 $linksToDisplay []= $link ; // Add to array.
1199 $PAGE = new pageBuilder
;
1200 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1201 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
1202 $PAGE- > renderPage ( 'picwall' );
1206 // -------- Tag cloud
1207 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tagcloud' ))
1209 $tags = $LINKSDB- > allTags ();
1210 // We sort tags alphabetically, then choose a font size according to count.
1211 // First, find max value.
1212 $maxcount = 0 ; foreach ( $tags as $key => $value ) $maxcount = max ( $maxcount , $value );
1215 foreach ( $tags as $key => $value )
1217 $tagList [ $key ] = array ( 'count' => $value , 'size' => max ( 40 * $value / $maxcount , 8 ));
1219 $PAGE = new pageBuilder
;
1220 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1221 $PAGE- > assign ( 'tags' , $tagList );
1222 $PAGE- > renderPage ( 'tagcloud' );
1226 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
1227 if ( isset ( $_GET [ 'addtag' ]))
1229 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
1230 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?searchtags=' . urlencode ( $_GET
[ 'addtag' ])); exit ; } // In case browser does not send HTTP_REFERER
1231 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1232 $params [ 'searchtags' ] = ( empty ( $params [ 'searchtags' ]) ? trim ( $_GET [ 'addtag' ]) : trim ( $params [ 'searchtags' ]). ' ' . trim ( $_GET [ 'addtag' ]));
1233 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1234 header ( 'Location: ?' . http_build_query ( $params ));
1238 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
1239 if ( isset ( $_GET [ 'removetag' ]))
1241 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
1242 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?' ); exit ; } // In case browser does not send HTTP_REFERER
1243 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
1244 if ( isset ( $params [ 'searchtags' ]))
1246 $tags = explode ( ' ' , $params [ 'searchtags' ]);
1247 $tags = array_diff ( $tags , array ( $_GET [ 'removetag' ])); // Remove value from array $tags.
1248 if ( count ( $tags )== 0 ) unset ( $params [ 'searchtags' ]); else $params [ 'searchtags' ] = implode ( ' ' , $tags );
1249 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
1251 header ( 'Location: ?' . http_build_query ( $params ));
1255 // -------- User wants to change the number of links per page (linksperpage=...)
1256 if ( isset ( $_GET [ 'linksperpage' ]))
1258 if ( is_numeric ( $_GET [ 'linksperpage' ])) { $_SESSION
[ 'LINKS_PER_PAGE' ]= abs ( intval ( $_GET
[ 'linksperpage' ])); }
1259 header ( 'Location: ' .( empty ( $_SERVER [ 'HTTP_REFERER' ])? '?' : $_SERVER [ 'HTTP_REFERER' ]));
1263 // -------- User wants to see only private links (toggle)
1264 if ( isset ( $_GET [ 'privateonly' ]))
1266 if ( empty ( $_SESSION [ 'privateonly' ]))
1268 $_SESSION [ 'privateonly' ]= 1 ; // See only private links
1272 unset ( $_SESSION [ 'privateonly' ]); // See all links
1274 header ( 'Location: ' .( empty ( $_SERVER [ 'HTTP_REFERER' ])? '?' : $_SERVER [ 'HTTP_REFERER' ]));
1278 // -------- Handle other actions allowed for non-logged in users:
1281 // User tries to post new link but is not loggedin:
1282 // Show login screen, then redirect to ?post=...
1283 if ( isset ( $_GET [ 'post' ]))
1285 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.
1288 $PAGE = new pageBuilder
;
1289 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1290 $PAGE- > renderPage ( 'linklist' );
1291 exit ; // Never remove this one ! All operations below are reserved for logged in user.
1294 // -------- All other functions are reserved for the registered user:
1296 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
1297 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tools' ))
1299 $PAGE = new pageBuilder
;
1300 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1301 $PAGE- > assign ( 'pageabsaddr' , indexUrl ());
1302 $PAGE- > renderPage ( 'tools' );
1306 // -------- User wants to change his/her password.
1307 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changepasswd' ))
1309 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) die ( 'You are not supposed to change a password on an Open Shaarli.' );
1310 if (! empty ( $_POST [ 'setpassword' ]) && ! empty ( $_POST [ 'oldpassword' ]))
1312 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1314 // Make sure old password is correct.
1315 $oldhash = sha1 ( $_POST [ 'oldpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1316 if ( $oldhash != $GLOBALS [ 'hash' ]) { echo '<script language="JavaScript">alert("The old password is not correct.");document.location= \' ?do=changepasswd \' ;</script>' ; exit ; }
1317 // Save new password
1318 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
1319 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1321 echo '<script language="JavaScript">alert("Your password has been changed.");document.location= \' ?do=tools \' ;</script>' ;
1324 else // show the change password form.
1326 $PAGE = new pageBuilder
;
1327 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1328 $PAGE- > assign ( 'token' , getToken ());
1329 $PAGE- > renderPage ( 'changepassword' );
1334 // -------- User wants to change configuration
1335 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=configure' ))
1337 if (! empty ( $_POST [ 'title' ]) )
1339 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1341 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
1342 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
1343 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
1344 $GLOBALS [ 'timezone' ] = $tz ;
1345 $GLOBALS [ 'title' ]= $_POST [ 'title' ];
1346 $GLOBALS [ 'redirector' ]= $_POST [ 'redirector' ];
1347 $GLOBALS [ 'disablesessionprotection' ]=! empty ( $_POST [ 'disablesessionprotection' ]);
1349 echo '<script language="JavaScript">alert("Configuration was saved.");document.location= \' ?do=tools \' ;</script>' ;
1352 else // Show the configuration form.
1354 $PAGE = new pageBuilder
;
1355 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1356 $PAGE- > assign ( 'token' , getToken ());
1357 $PAGE- > assign ( 'title' , htmlspecialchars ( empty ( $GLOBALS [ 'title' ]) ? '' : $GLOBALS [ 'title' ] , ENT_QUOTES
));
1358 $PAGE- > assign ( 'redirector' , htmlspecialchars ( empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ] , ENT_QUOTES
));
1359 list ( $timezone_form , $timezone_js ) = templateTZform ( $GLOBALS [ 'timezone' ]);
1360 $PAGE- > assign ( 'timezone_form' , $timezone_form ); // FIXME: put entire tz form generation in template ?
1361 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1362 $PAGE- > renderPage ( 'configure' );
1367 // -------- User wants to rename a tag or delete it
1368 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changetag' ))
1370 if ( empty ( $_POST [ 'fromtag' ]))
1372 $PAGE = new pageBuilder
;
1373 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1374 $PAGE- > assign ( 'token' , getToken ());
1375 $PAGE- > renderPage ( 'changetag' );
1378 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1381 if (! empty ( $_POST [ 'deletetag' ]) && ! empty ( $_POST [ 'fromtag' ]))
1383 $needle = trim ( $_POST [ 'fromtag' ]);
1384 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1385 foreach ( $linksToAlter as $key => $value )
1387 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1388 unset ( $tags [ array_search ( $needle , $tags )]); // Remove tag.
1389 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1390 $LINKSDB [ $key ]= $value ;
1392 $LINKSDB- > savedb (); // save to disk
1393 echo '<script language="JavaScript">alert("Tag was removed from ' . count ( $linksToAlter ). ' links.");document.location= \' ? \' ;</script>' ;
1398 if (! empty ( $_POST [ 'renametag' ]) && ! empty ( $_POST [ 'fromtag' ]) && ! empty ( $_POST [ 'totag' ]))
1400 $needle = trim ( $_POST [ 'fromtag' ]);
1401 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1402 foreach ( $linksToAlter as $key => $value )
1404 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1405 $tags [ array_search ( $needle , $tags )] = trim ( $_POST [ 'totag' ]); // Remplace tags value.
1406 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1407 $LINKSDB [ $key ]= $value ;
1409 $LINKSDB- > savedb (); // save to disk
1410 echo '<script language="JavaScript">alert("Tag was renamed in ' . count ( $linksToAlter ). ' links.");document.location= \' ?searchtags=' . urlencode ( $_POST [ 'totag' ]). ' \' ;</script>' ;
1415 // -------- User wants to add a link without using the bookmarklet: show form.
1416 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=addlink' ))
1418 $PAGE = new pageBuilder
;
1419 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1420 $PAGE- > renderPage ( 'addlink' );
1424 // -------- User clicked the "Save" button when editing a link: Save link to database.
1425 if ( isset ( $_POST [ 'save_edit' ]))
1427 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1428 $tags = trim ( preg_replace ( '/\s\s+/' , ' ' , $_POST [ 'lf_tags' ])); // Remove multiple spaces.
1429 $linkdate = $_POST [ 'lf_linkdate' ];
1430 $link = array ( 'title' => trim ( $_POST [ 'lf_title' ]), 'url' => trim ( $_POST [ 'lf_url' ]), 'description' => trim ( $_POST [ 'lf_description' ]), 'private' =>( isset ( $_POST [ 'lf_private' ]) ? 1 : 0 ),
1431 'linkdate' => $linkdate , 'tags' => str_replace ( ',' , ' ' , $tags ));
1432 if ( $link [ 'title' ]== '' ) $link [ 'title' ]= $link [ 'url' ]; // If title is empty, use the URL as title.
1433 $LINKSDB [ $linkdate ] = $link ;
1434 $LINKSDB- > savedb (); // save to disk
1437 // If we are called from the bookmarklet, we must close the popup:
1438 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1439 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1440 $returnurl .= '#' . smallHash ( $linkdate ); // Scroll to the link which has been edited.
1441 header ( 'Location: ' . $returnurl ); // After saving the link, redirect to the page the user was on.
1445 // -------- User clicked the "Cancel" button when editing a link.
1446 if ( isset ( $_POST [ 'cancel_edit' ]))
1448 // If we are called from the bookmarklet, we must close the popup;
1449 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1450 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1451 $returnurl .= '#' . smallHash ( $_POST [ 'lf_linkdate' ]); // Scroll to the link which has been edited.
1452 header ( 'Location: ' . $returnurl ); // After canceling, redirect to the page the user was on.
1456 // -------- User clicked the "Delete" button when editing a link : Delete link from database.
1457 if ( isset ( $_POST [ 'delete_link' ]))
1459 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1460 // We do not need to ask for confirmation:
1461 // - confirmation is handled by javascript
1462 // - we are protected from XSRF by the token.
1463 $linkdate = $_POST [ 'lf_linkdate' ];
1464 unset ( $LINKSDB [ $linkdate ]);
1465 $LINKSDB- > savedb (); // save to disk
1467 // If we are called from the bookmarklet, we must close the popup:
1468 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1469 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1470 if ( $returnurl == '?' ) { $returnurl
= ( isset ( $_SERVER
[ 'HTTP_REFERER' ]) ? $_SERVER
[ 'HTTP_REFERER' ] : '?' ); }
1471 header ( 'Location: ' . $returnurl ); // After deleting the link, redirect to the page the user was on.
1475 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1476 if ( isset ( $_GET [ 'edit_link' ]))
1478 $link = $LINKSDB [ $_GET [ 'edit_link' ]]; // Read database
1479 if (! $link ) { header ( 'Location: ?' ); exit ; } // Link not found in database.
1480 $PAGE = new pageBuilder
;
1481 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1482 $PAGE- > assign ( 'link' , $link );
1483 $PAGE- > assign ( 'link_is_new' , false );
1484 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1485 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1486 $PAGE- > renderPage ( 'editlink' );
1490 // -------- User want to post a new link: Display link edit form.
1491 if ( isset ( $_GET [ 'post' ]))
1495 // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
1496 $i = strpos ( $url , '&utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1497 $i = strpos ( $url , '?utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1498 $i = strpos ( $url , '#xtor=RSS-' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1500 $link_is_new = false ;
1501 $link = $LINKSDB- > getLinkFromUrl ( $url ); // Check if URL is not already in database (in this case, we will edit the existing link)
1504 $link_is_new = true ; // This is a new link
1505 $linkdate = strval ( date ( 'Ymd_His' ));
1506 $title = ( empty ( $_GET [ 'title' ]) ? '' : $_GET [ 'title' ] ); // Get title if it was provided in URL (by the bookmarklet).
1507 $description = '' ; $tags = '' ; $private = 0 ;
1508 if (( $url != '' ) && parse_url ( $url , PHP_URL_SCHEME
)== '' ) $url = 'http://' . $url ;
1509 // 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.)
1510 if ( empty ( $title ) && parse_url ( $url , PHP_URL_SCHEME
)== 'http' )
1512 list ( $status , $headers , $data ) = getHTTP ( $url , 4 ); // Short timeout to keep the application responsive.
1513 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
1514 if ( strpos ( $status , '200 OK' )!== false ) $title = html_entity_decode ( html_extract_title ( $data ), ENT_QUOTES
, 'UTF-8' );
1517 if ( $url == '' ) $url = '?' . smallHash ( $linkdate ); // In case of empty URL, this is just a text (with a link that point to itself)
1518 $link = array ( 'linkdate' => $linkdate , 'title' => $title , 'url' => $url , 'description' => $description , 'tags' => $tags , 'private' => 0 );
1521 $PAGE = new pageBuilder
;
1522 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1523 $PAGE- > assign ( 'link' , $link );
1524 $PAGE- > assign ( 'link_is_new' , $link_is_new );
1525 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1526 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1527 $PAGE- > renderPage ( 'editlink' );
1531 // -------- Export as Netscape Bookmarks HTML file.
1532 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=export' ))
1534 if ( empty ( $_GET [ 'what' ]))
1536 $PAGE = new pageBuilder
;
1537 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1538 $PAGE- > renderPage ( 'export' );
1541 $exportWhat = $_GET [ 'what' ];
1542 if (! array_intersect ( array ( 'all' , 'public' , 'private' ), array ( $exportWhat ))) die ( 'What are you trying to export ???' );
1544 header ( 'Content-Type: text/html; charset=utf-8' );
1545 header ( 'Content-disposition: attachment; filename=bookmarks_' . $exportWhat . '_' . strval ( date ( 'Ymd_His' )). '.html' );
1546 $currentdate = date ( 'Y/m/d H:i:s' );
1548 <!DOCTYPE NETSCAPE-Bookmark-file-1>
1549 <!-- This is an automatically generated file.
1550 It will be read and overwritten.
1552 <!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1553 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1554 <TITLE>Bookmarks</TITLE>
1557 foreach ( $LINKSDB as $link )
1559 if ( $exportWhat == 'all' ||
1560 ( $exportWhat == 'private' && $link [ 'private' ]!= 0 ) ||
1561 ( $exportWhat == 'public' && $link [ 'private' ]== 0 ))
1563 echo '<DT><A HREF="' . htmlspecialchars ( $link [ 'url' ]). '" ADD_DATE="' . linkdate2timestamp ( $link [ 'linkdate' ]). '" PRIVATE="' . $link [ 'private' ]. '"' ;
1564 if ( $link [ 'tags' ]!= '' ) echo ' TAGS="' . htmlspecialchars ( str_replace ( ' ' , ',' , $link [ 'tags' ])). '"' ;
1565 echo '>' . htmlspecialchars ( $link [ 'title' ]). "</A> \n " ;
1566 if ( $link [ 'description' ]!= '' ) echo '<DD>' . htmlspecialchars ( $link [ 'description' ]). " \n " ;
1572 // -------- User is uploading a file for import
1573 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=upload' ))
1575 // If file is too big, some form field may be missing.
1576 if (! isset ( $_POST [ 'token' ]) || (! isset ( $_FILES )) || ( isset ( $_FILES [ 'filetoupload' ][ 'size' ]) && $_FILES [ 'filetoupload' ][ 'size' ]== 0 ))
1578 $returnurl = ( empty ( $_SERVER [ 'HTTP_REFERER' ]) ? '?' : $_SERVER [ 'HTTP_REFERER' ] );
1579 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>' ;
1582 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1587 // -------- Show upload/import dialog:
1588 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=import' ))
1590 $PAGE = new pageBuilder
;
1591 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1592 $PAGE- > assign ( 'token' , getToken ());
1593 $PAGE- > assign ( 'maxfilesize' , getMaxFileSize ());
1594 $PAGE- > renderPage ( 'import' );
1598 // -------- Otherwise, simply display search form and links:
1599 $PAGE = new pageBuilder
;
1600 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1601 buildLinkList ( $PAGE , $LINKSDB ); // Compute list of links to display
1602 $PAGE- > renderPage ( 'linklist' );
1606 // -----------------------------------------------------------------------------------------------
1607 // Process the import file form.
1608 function importFile ()
1610 if (!( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ])) { die ( 'Not allowed.' ); }
1611 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1612 $filename = $_FILES [ 'filetoupload' ][ 'name' ];
1613 $filesize = $_FILES [ 'filetoupload' ][ 'size' ];
1614 $data = file_get_contents ( $_FILES [ 'filetoupload' ][ 'tmp_name' ]);
1615 $private = ( empty ( $_POST [ 'private' ]) ? 0 : 1 ); // Should the links be imported as private ?
1616 $overwrite = ! empty ( $_POST [ 'overwrite' ]) ; // Should the imported links overwrite existing ones ?
1621 if ( startsWith ( $data , '<!DOCTYPE NETSCAPE-Bookmark-file-1>' )) $type = 'netscape' ; // Netscape bookmark file (aka Firefox).
1623 // Then import the bookmarks.
1624 if ( $type == 'netscape' )
1626 // This is a standard Netscape-style bookmark file.
1627 // This format is supported by all browsers (except IE, of course), also delicious, diigo and others.
1628 foreach ( explode ( '<DT>' , $data ) as $html ) // explode is very fast
1630 $link = array ( 'linkdate' => '' , 'title' => '' , 'url' => '' , 'description' => '' , 'tags' => '' , 'private' => 0 );
1631 $d = explode ( '<DD>' , $html );
1632 if ( startswith ( $d [ 0 ], '<A ' ))
1634 $link [ 'description' ] = ( isset ( $d [ 1 ]) ? html_entity_decode ( trim ( $d [ 1 ]), ENT_QUOTES
, 'UTF-8' ) : '' ); // Get description (optional)
1635 preg_match ( '!<A .*?>(.*?)</A>!i' , $d [ 0 ], $matches ); $link [ 'title' ] = ( isset ( $matches [ 1 ]) ? trim ( $matches [ 1 ]) : '' ); // Get title
1636 $link [ 'title' ] = html_entity_decode ( $link [ 'title' ], ENT_QUOTES
, 'UTF-8' );
1637 preg_match_all ( '! ([A-Z_]+)= \" (.*?)"!i' , $html , $matches , PREG_SET_ORDER
); // Get all other attributes
1639 foreach ( $matches as $m )
1641 $attr = $m [ 1 ]; $value = $m [ 2 ];
1642 if ( $attr == 'HREF' ) $link [ 'url' ]= html_entity_decode ( $value , ENT_QUOTES
, 'UTF-8' );
1643 elseif ( $attr == 'ADD_DATE' ) $raw_add_date = intval ( $value );
1644 elseif ( $attr == 'PRIVATE' ) $link [ 'private' ]=( $value == '0' ? 0 : 1 );
1645 elseif ( $attr == 'TAGS' ) $link [ 'tags' ]= html_entity_decode ( str_replace ( ',' , ' ' , $value ), ENT_QUOTES
, 'UTF-8' );
1647 if ( $link [ 'url' ]!= '' )
1649 if ( $private == 1 ) $link [ 'private' ]= 1 ;
1650 $dblink = $LINKSDB- > getLinkFromUrl ( $link [ 'url' ]); // See if the link is already in database.
1652 { // Link not in database, let's import it...
1653 if ( empty ( $raw_add_date )) $raw_add_date = time (); // In case of shitty bookmark file with no ADD_DATE
1655 // Make sure date/time is not already used by another link.
1656 // (Some bookmark files have several different links with the same ADD_DATE)
1657 // We increment date by 1 second until we find a date which is not used in db.
1658 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1659 while (! empty ( $LINKSDB [ date ( 'Ymd_His' , $raw_add_date )])) { $raw_add_date++
; } // Yes, I know it's ugly.
1660 $link [ 'linkdate' ]= date ( 'Ymd_His' , $raw_add_date );
1661 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1664 else // link already present in database.
1667 { // If overwrite is required, we import link data, except date/time.
1668 $link [ 'linkdate' ]= $dblink [ 'linkdate' ];
1669 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1679 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) was successfully processed: ' . $import_count . ' links imported.");document.location= \' ? \' ;</script>' ;
1683 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) has an unknown file format. Nothing was imported.");document.location= \' ? \' ;</script>' ;
1687 // -----------------------------------------------------------------------------------------------
1688 // Template for the list of links (<div id="linklist">)
1689 // This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1690 function buildLinkList ( $PAGE , $LINKSDB )
1692 // ---- Filter link database according to parameters
1693 $linksToDisplay = array ();
1696 if ( isset ( $_GET [ 'searchterm' ])) // Fulltext search
1698 $linksToDisplay = $LINKSDB- > filterFulltext ( trim ( $_GET [ 'searchterm' ]));
1699 $search_crits = htmlspecialchars ( trim ( $_GET [ 'searchterm' ]));
1700 $search_type = 'fulltext' ;
1702 elseif ( isset ( $_GET [ 'searchtags' ])) // Search by tag
1704 $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1705 $search_crits = explode ( ' ' , trim ( $_GET [ 'searchtags' ]));
1706 $search_type = 'tags' ;
1708 elseif ( isset ( $_SERVER [ 'QUERY_STRING' ]) && preg_match ( '/[a-zA-Z0-9-_@] {6} (&.+?)?/' , $_SERVER [ 'QUERY_STRING' ])) // Detect smallHashes in URL
1710 $linksToDisplay = $LINKSDB- > filterSmallHash ( substr ( trim ( $_SERVER [ "QUERY_STRING" ], '/' ), 0 , 6 ));
1711 if ( count ( $linksToDisplay )== 0 )
1713 header ( $_SERVER [ "SERVER_PROTOCOL" ]. " 404 Not Found" );
1714 echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.' ;
1715 echo '<br>You would mind <a href="?">clicking here</a> ?' ;
1718 $search_type = 'permalink' ;
1721 $linksToDisplay = $LINKSDB ; // otherwise, display without filtering.
1723 // Option: Show only private links
1724 if (! empty ( $_SESSION [ 'privateonly' ]))
1727 foreach ( $linksToDisplay as $linkdate => $link )
1729 if ( $link [ 'private' ]!= 0 ) $tmp [ $linkdate ]= $link ;
1731 $linksToDisplay = $tmp ;
1734 // ---- Handle paging.
1735 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess ???
1736 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1737 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1739 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // Stupid and ugly. Thanks php.
1741 // If there is only a single link, we change on-the-fly the title of the page.
1742 if ( count ( $linksToDisplay )== 1 ) $GLOBALS [ 'pagetitle' ] = $linksToDisplay [ $keys [ 0 ]][ 'title' ]. ' - ' . $GLOBALS [ 'title' ];
1744 // Select articles according to paging.
1745 $pagecount = ceil ( count ( $keys )/ $_SESSION [ 'LINKS_PER_PAGE' ]);
1746 $pagecount = ( $pagecount == 0 ? 1 : $pagecount );
1747 $page =( empty ( $_GET [ 'page' ]) ? 1 : intval ( $_GET [ 'page' ]));
1748 $page = ( $page < 1 ? 1 : $page );
1749 $page = ( $page > $pagecount ? $pagecount : $page );
1750 $i = ( $page-1 )* $_SESSION [ 'LINKS_PER_PAGE' ]; // Start index.
1751 $end = $i +
$_SESSION [ 'LINKS_PER_PAGE' ];
1752 $linkDisp = array (); // Links to display
1753 while ( $i < $end && $i < count ( $keys ))
1755 $link = $linksToDisplay [ $keys [ $i ]];
1756 $link [ 'description' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))));
1757 $title = $link [ 'title' ];
1758 $classLi = $i %
2 != 0 ? '' : 'publicLinkHightLight' ;
1759 $link [ 'class' ] = ( $link [ 'private' ]== 0 ? $classLi : 'private' );
1760 $link [ 'localdate' ]= linkdate2locale ( $link [ 'linkdate' ]);
1761 $link [ 'taglist' ]= explode ( ' ' , $link [ 'tags' ]);
1762 $linkDisp [ $keys [ $i ]] = $link ;
1766 // Compute paging navigation
1767 $searchterm = ( empty ( $_GET [ 'searchterm' ]) ? '' : '&searchterm=' . $_GET [ 'searchterm' ] );
1768 $searchtags = ( empty ( $_GET [ 'searchtags' ]) ? '' : '&searchtags=' . $_GET [ 'searchtags' ] );
1770 $previous_page_url = '' ; if ( $i != count ( $keys )) $previous_page_url = '?page=' .( $page +
1 ). $searchterm . $searchtags ;
1771 $next_page_url = '' ; if ( $page > 1 ) $next_page_url = '?page=' .( $page-1 ). $searchterm . $searchtags ;
1773 $token = '' ; if ( isLoggedIn ()) $token = getToken ();
1775 // Fill all template fields.
1776 $PAGE- > assign ( 'linkcount' , count ( $LINKSDB ));
1777 $PAGE- > assign ( 'previous_page_url' , $previous_page_url );
1778 $PAGE- > assign ( 'next_page_url' , $next_page_url );
1779 $PAGE- > assign ( 'page_current' , $page );
1780 $PAGE- > assign ( 'page_max' , $pagecount );
1781 $PAGE- > assign ( 'result_count' , count ( $linksToDisplay ));
1782 $PAGE- > assign ( 'search_type' , $search_type );
1783 $PAGE- > assign ( 'search_crits' , $search_crits );
1784 $PAGE- > assign ( 'redirector' , empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ]); // optional redirector URL
1785 $PAGE- > assign ( 'token' , $token );
1786 $PAGE- > assign ( 'links' , $linkDisp );
1790 // Compute the thumbnail for a link.
1792 // with a link to the original URL.
1793 // Understands various services (youtube.com...)
1794 // Input: $url = url for which the thumbnail must be found.
1795 // $href = if provided, this URL will be followed instead of $url
1796 // Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1797 // Some of them may be missing.
1798 // Return an empty array if no thumbnail available.
1799 function computeThumbnail ( $url , $href = false )
1801 if (! $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ]) return array ();
1802 if ( $href == false ) $href = $url ;
1804 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1805 // (eg. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1806 // ^^^^^^^^^^^ ^^^^^^^^^^^
1807 $domain = parse_url ( $url , PHP_URL_HOST
);
1808 if ( $domain == 'youtube.com' || $domain == 'www.youtube.com' )
1810 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract video ID and get thumbnail
1811 if (! empty ( $params [ 'v' ])) return array ( 'src' => 'http://img.youtube.com/vi/' . $params [ 'v' ]. '/default.jpg' ,
1812 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1814 if ( $domain == 'youtu.be' ) // Youtube short links
1816 $path = parse_url ( $url , PHP_URL_PATH
);
1817 return array ( 'src' => 'http://img.youtube.com/vi' . $path . '/default.jpg' ,
1818 'href' => $href , 'width' => '120' , 'height' => '90' , 'alt' => 'YouTube thumbnail' );
1820 if ( $domain == 'pix.toile-libre.org' ) // pix.toile-libre.org image hosting
1822 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract image filename.
1823 if (! empty ( $params ) && ! empty ( $params [ 'img' ])) return array ( 'src' => 'http://pix.toile-libre.org/upload/thumb/' . urlencode ( $params [ 'img' ]),
1824 'href' => $href , 'style' => 'max-width:120px; max-height:150px' , 'alt' => 'pix.toile-libre.org thumbnail' );
1827 if ( $domain == 'imgur.com' )
1829 $path = parse_url ( $url , PHP_URL_PATH
);
1830 if ( startsWith ( $path , '/a/' )) return array (); // Thumbnails for albums are not available.
1831 if ( startsWith ( $path , '/r/' )) return array ( 'src' => 'http://i.imgur.com/' . basename ( $path ). 's.jpg' ,
1832 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1833 if ( startsWith ( $path , '/gallery/' )) return array ( 'src' => 'http://i.imgur.com' . substr ( $path , 8 ). 's.jpg' ,
1834 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1836 if ( substr_count ( $path , '/' )== 1 ) return array ( 'src' => 'http://i.imgur.com/' . substr ( $path , 1 ). 's.jpg' ,
1837 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1839 if ( $domain == 'i.imgur.com' )
1841 $pi = pathinfo ( parse_url ( $url , PHP_URL_PATH
));
1842 if (! empty ( $pi [ 'filename' ])) return array ( 'src' => 'http://i.imgur.com/' . $pi [ 'filename' ]. 's.jpg' ,
1843 'href' => $href , 'width' => '90' , 'height' => '90' , 'alt' => 'imgur.com thumbnail' );
1845 if ( $domain == 'dailymotion.com' || $domain == 'www.dailymotion.com' )
1847 if ( strpos ( $url , 'dailymotion.com/video/' )!== false )
1849 $thumburl = str_replace ( 'dailymotion.com/video/' , 'dailymotion.com/thumbnail/video/' , $url );
1850 return array ( 'src' => $thumburl ,
1851 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'DailyMotion thumbnail' );
1854 if ( endsWith ( $domain , '.imageshack.us' ))
1856 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1857 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1859 $thumburl = substr ( $url , 0 , strlen ( $url )- strlen ( $ext )). 'th.' . $ext ;
1860 return array ( 'src' => $thumburl ,
1861 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'imageshack.us thumbnail' );
1865 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1866 // So we deport the thumbnail generation in order not to slow down page generation
1867 // (and we also cache the thumbnail)
1869 if (! $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ]) return array (); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1871 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' )
1872 || $domain == 'vimeo.com'
1873 || $domain == 'ted.com' || endsWith ( $domain , '.ted.com' )
1874 || $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' )
1877 if ( $domain == 'vimeo.com' )
1878 { // Make sure this vimeo url points to a video (/xxx... where xxx is numeric)
1879 $path = parse_url ( $url , PHP_URL_PATH
);
1880 if (! preg_match ( '!/\d+.+?!' , $path )) return array (); // This is not a single video URL.
1882 if ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
1883 { // Make sure this url points to a single comic (/xxx... where xxx is numeric)
1884 $path = parse_url ( $url , PHP_URL_PATH
);
1885 if (! preg_match ( '!/\d+.+?!' , $path )) return array ();
1887 if ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
1888 { // Make sure this TED url points to a video (/talks/...)
1889 $path = parse_url ( $url , PHP_URL_PATH
);
1890 if ( "/talks/" !== substr ( $path , 0 , 7 )) return array (); // This is not a single video URL.
1892 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1893 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ),
1894 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1897 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1898 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1899 // But using the extension will do.
1900 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1901 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1903 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1904 return array ( 'src' => indexUrl (). '?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ),
1905 'href' => $href , 'width' => '120' , 'style' => 'height:auto;' , 'alt' => 'thumbnail' );
1907 return array (); // No thumbnail.
1912 // Returns the HTML code to display a thumbnail for a link
1913 // with a link to the original URL.
1914 // Understands various services (youtube.com...)
1915 // Input: $url = url for which the thumbnail must be found.
1916 // $href = if provided, this URL will be followed instead of $url
1917 // Returns '' if no thumbnail available.
1918 function thumbnail ( $url , $href = false )
1920 $t = computeThumbnail ( $url , $href );
1921 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1923 $html = '<a href="' . htmlspecialchars ( $t [ 'href' ]). '"><img src="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1924 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1925 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1926 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1927 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1933 // Returns the HTML code to display a thumbnail for a link
1934 // for the picture wall (using lazy image loading)
1935 // Understands various services (youtube.com...)
1936 // Input: $url = url for which the thumbnail must be found.
1937 // $href = if provided, this URL will be followed instead of $url
1938 // Returns '' if no thumbnail available.
1939 function lazyThumbnail ( $url , $href = false )
1941 $t = computeThumbnail ( $url , $href );
1942 if ( count ( $t )== 0 ) return '' ; // Empty array = no thumbnail for this URL.
1944 $html = '<a href="' . htmlspecialchars ( $t [ 'href' ]). '">' ;
1946 // Lazy image (only loaded by javascript when in the viewport).
1947 $html .= '<img class="lazyimage" src="#" data-original="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1948 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1949 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1950 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1951 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1954 // No-javascript fallback:
1955 $html .= '<noscript><img src="' . htmlspecialchars ( $t [ 'src' ]). '"' ;
1956 if (! empty ( $t [ 'width' ])) $html .= ' width="' . htmlspecialchars ( $t [ 'width' ]). '"' ;
1957 if (! empty ( $t [ 'height' ])) $html .= ' height="' . htmlspecialchars ( $t [ 'height' ]). '"' ;
1958 if (! empty ( $t [ 'style' ])) $html .= ' style="' . htmlspecialchars ( $t [ 'style' ]). '"' ;
1959 if (! empty ( $t [ 'alt' ])) $html .= ' alt="' . htmlspecialchars ( $t [ 'alt' ]). '"' ;
1960 $html .= '></noscript></a>' ;
1966 // -----------------------------------------------------------------------------------------------
1968 // This function should NEVER be called if the file data/config.php exists.
1971 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1972 if ( endsWith ( $_SERVER [ 'SERVER_NAME' ], '.free.fr' ) && ! is_dir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' )) mkdir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' , 0705 );
1974 if (! empty ( $_POST [ 'setlogin' ]) && ! empty ( $_POST [ 'setpassword' ]))
1977 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
1978 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
1979 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
1980 $GLOBALS [ 'timezone' ] = $tz ;
1981 // Everything is ok, let's create config file.
1982 $GLOBALS [ 'login' ] = $_POST [ 'setlogin' ];
1983 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
1984 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1985 $GLOBALS [ 'title' ] = ( empty ( $_POST [ 'title' ]) ? 'Shared links on ' . htmlspecialchars ( indexUrl ()) : $_POST [ 'title' ] );
1987 echo '<script language="JavaScript">alert("Shaarli is now configured. Please enter your login/password and start shaaring your links !");document.location= \' ?do=login \' ;</script>' ;
1991 // Display config form:
1992 list ( $timezone_form , $timezone_js ) = templateTZform ();
1993 $timezone_html = '' ; if ( $timezone_form != '' ) $timezone_html = '<tr><td valign="top"><b>Timezone:</b></td><td>' . $timezone_form . '</td></tr>' ;
1995 $PAGE = new pageBuilder
;
1996 $PAGE- > assign ( 'timezone_html' , $timezone_html );
1997 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1998 $PAGE- > renderPage ( 'install' );
2002 // Generates the timezone selection form and javascript.
2003 // Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
2004 // Output: array(html,js)
2005 // Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
2006 // Returns array('','') if server does not support timezones list. (eg. php 5.1 on free.fr)
2007 function templateTZform ( $ptz = false )
2009 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
2011 // Try to split the provided timezone.
2012 if ( $ptz == false ) { $l
= timezone_identifiers_list (); $ptz
= $l
[ 0 ]; }
2013 $spos = strpos ( $ptz , '/' ); $pcontinent = substr ( $ptz , 0 , $spos ); $pcity = substr ( $ptz , $spos +
1 );
2015 // Display config form:
2016 $timezone_form = '' ;
2018 // The list is in the forme "Europe/Paris", "America/Argentina/Buenos_Aires"...
2019 // We split the list in continents/cities.
2020 $continents = array ();
2022 foreach ( timezone_identifiers_list () as $tz )
2024 if ( $tz == 'UTC' ) $tz = 'UTC/UTC' ;
2025 $spos = strpos ( $tz , '/' );
2028 $continent = substr ( $tz , 0 , $spos ); $city = substr ( $tz , $spos +
1 );
2029 $continents [ $continent ]= 1 ;
2030 if (! isset ( $cities [ $continent ])) $cities [ $continent ]= '' ;
2031 $cities [ $continent ].= '<option value="' . $city . '"' .( $pcity == $city ? 'selected' : '' ). '>' . $city . '</option>' ;
2034 $continents_html = '' ;
2035 $continents = array_keys ( $continents );
2036 foreach ( $continents as $continent )
2037 $continents_html .= '<option value="' . $continent . '"' .( $pcontinent == $continent ? 'selected' : '' ). '>' . $continent . '</option>' ;
2038 $cities_html = $cities [ $pcontinent ];
2039 $timezone_form = "Continent: <select name= \" continent \" id= \" continent \" onChange= \" onChangecontinent(); \" > ${continents_html} </select><br /><br />" ;
2040 $timezone_form .= "City: <select name= \" city \" id= \" city \" > ${cities[$pcontinent]} </select><br /><br />" ;
2041 $timezone_js = "<script language= \" JavaScript \" >" ;
2042 $timezone_js .= "function onChangecontinent() {document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];} " ;
2043 $timezone_js .= "var citiescontinent = " . json_encode ( $cities ). ";" ;
2044 $timezone_js .= "</script>" ;
2045 return array ( $timezone_form , $timezone_js );
2047 return array ( '' , '' );
2050 // Tells if a timezone is valid or not.
2051 // If not valid, returns false.
2052 // If system does not support timezone list, returns false.
2053 function isTZvalid ( $continent , $city )
2055 $tz = $continent . '/' . $city ;
2056 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
2058 if ( in_array ( $tz , timezone_identifiers_list ())) // it's a valid timezone ?
2065 // Webservices (for use with jQuery/jQueryUI)
2066 // eg. index.php?ws=tags&term=minecr
2067 function processWS ()
2069 if ( empty ( $_GET [ 'ws' ]) || empty ( $_GET [ 'term' ])) return ;
2070 $term = $_GET [ 'term' ];
2071 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
2072 header ( 'Content-Type: application/json; charset=utf-8' );
2074 // Search in tags (case insentitive, cumulative search)
2075 if ( $_GET [ 'ws' ]== 'tags' )
2077 $tags = explode ( ' ' , str_replace ( ',' , ' ' , $term )); $last = array_pop ( $tags ); // Get the last term ("a b c d" ==> "a b c", "d")
2078 $addtags = '' ; if ( $tags ) $addtags = implode ( ' ' , $tags ). ' ' ; // We will pre-pend previous tags
2080 /* To speed up things, we store list of tags in session */
2081 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
2082 foreach ( $_SESSION [ 'tags' ] as $key => $value )
2084 if ( startsWith ( $key , $last , $case = false ) && ! in_array ( $key , $tags )) $suggested [ $addtags . $key . ' ' ]= 0 ;
2086 echo json_encode ( array_keys ( $suggested ));
2090 // Search a single tag (case sentitive, single tag search)
2091 if ( $_GET [ 'ws' ]== 'singletag' )
2093 /* To speed up things, we store list of tags in session */
2094 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
2095 foreach ( $_SESSION [ 'tags' ] as $key => $value )
2097 if ( startsWith ( $key , $term , $case = true )) $suggested [ $key ]= 0 ;
2099 echo json_encode ( array_keys ( $suggested ));
2104 // Re-write configuration file according to globals.
2105 // Requires some $GLOBALS to be set (login,hash,salt,title).
2106 // If the config file cannot be saved, an error message is dislayed and the user is redirected to "Tools" menu.
2107 // (otherwise, the function simply returns.)
2108 function writeConfig ()
2110 if ( is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]) && ! isLoggedIn ()) die ( 'You are not authorized to alter config.' ); // Only logged in user can alter config.
2111 if ( empty ( $GLOBALS [ 'redirector' ])) $GLOBALS [ 'redirector' ]= '' ;
2112 if ( empty ( $GLOBALS [ 'disablesessionprotection' ])) $GLOBALS [ 'disablesessionprotection' ]= false ;
2113 $config = '<?php $GLOBALS [ \' login \' ]=' . var_export ( $GLOBALS [ 'login' ], true ). '; $GLOBALS [ \' hash \' ]=' . var_export ( $GLOBALS [ 'hash' ], true ). '; $GLOBALS [ \' salt \' ]=' . var_export ( $GLOBALS [ 'salt' ], true ). '; ' ;
2114 $config .= ' $GLOBALS [ \' timezone \' ]=' . var_export ( $GLOBALS [ 'timezone' ], true ). '; date_default_timezone_set(' . var_export ( $GLOBALS [ 'timezone' ], true ). '); $GLOBALS [ \' title \' ]=' . var_export ( $GLOBALS [ 'title' ], true ). ';' ;
2115 $config .= ' $GLOBALS [ \' redirector \' ]=' . var_export ( $GLOBALS [ 'redirector' ], true ). '; ' ;
2116 $config .= ' $GLOBALS [ \' disablesessionprotection \' ]=' . var_export ( $GLOBALS [ 'disablesessionprotection' ], true ). '; ' ;
2118 if (! file_put_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ], $config ) || strcmp ( file_get_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]), $config )!= 0 )
2120 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>' ;
2125 /* Because some f*cking services like Flickr require an extra HTTP request to get the thumbnail URL,
2126 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
2127 The following function takes the URL a link (eg. a flickr page) and return the proper thumbnail.
2128 This function is called by passing the url:
2129 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
2130 [URL] is the URL of the link (eg. a flickr page)
2131 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
2132 The function below will fetch the image from the webservice and store it in the cache.
2134 function genThumbnail ()
2136 // Make sure the parameters in the URL were generated by us.
2137 $sign = hash_hmac ( 'sha256' , $_GET [ 'url' ], $GLOBALS [ 'salt' ]);
2138 if ( $sign != $_GET [ 'hmac' ]) die ( 'Naughty boy !' );
2140 // Let's see if we don't already have the image for this URL in the cache.
2141 $thumbname = hash ( 'sha1' , $_GET [ 'url' ]). '.jpg' ;
2142 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ))
2143 { // We have the thumbnail, just serve it:
2144 header ( 'Content-Type: image/jpeg' );
2145 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname );
2148 // We may also serve a blank image (if service did not respond)
2149 $blankname = hash ( 'sha1' , $_GET [ 'url' ]). '.gif' ;
2150 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname ))
2152 header ( 'Content-Type: image/gif' );
2153 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname );
2157 // Otherwise, generate the thumbnail.
2158 $url = $_GET [ 'url' ];
2159 $domain = parse_url ( $url , PHP_URL_HOST
);
2161 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' ))
2163 // Crude replacement to handle new Flickr domain policy (They prefer www. now)
2164 $url = str_replace ( 'http://flickr.com/' , 'http://www.flickr.com/' , $url );
2166 // Is this a link to an image, or to a flickr page ?
2168 if ( endswith ( parse_url ( $url , PHP_URL_PATH
), '.jpg' ))
2169 { // This is a direct link to an image. eg. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
2170 preg_match ( '!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!' , $url , $matches );
2171 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ]. 'm.jpg' ;
2173 else // this is a flickr page (html)
2175 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 20 ); // Get the flickr html page.
2176 if ( strpos ( $httpstatus , '200 OK' )!== false )
2178 // Flickr now nicely provides the URL of the thumbnail in each flickr page.
2179 preg_match ( '!<link rel= \" image_src \" href= \" (.+?) \" !' , $data , $matches );
2180 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2182 // In albums (and some other pages), the link rel="image_src" is not provided,
2183 // but flickr provides:
2184 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
2187 preg_match ( '!<meta property= \" og:image \" content= \" (.+?) \" !' , $data , $matches );
2188 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ];
2194 { // Let's download the image.
2195 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 ); // Image is 240x120, so 10 seconds to download should be enough.
2196 if ( strpos ( $httpstatus , '200 OK' )!== false )
2198 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2199 header ( 'Content-Type: image/jpeg' );
2206 elseif ( $domain == 'vimeo.com' )
2208 // This is more complex: we have to perform a HTTP request, then parse the result.
2209 // Maybe we should deport this to javascript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2210 $vid = substr ( parse_url ( $url , PHP_URL_PATH
), 1 );
2211 list ( $httpstatus , $headers , $data ) = getHTTP ( 'http://vimeo.com/api/v2/video/' . htmlspecialchars ( $vid ). '.php' , 5 );
2212 if ( strpos ( $httpstatus , '200 OK' )!== false )
2214 $t = unserialize ( $data );
2215 $imageurl = $t [ 0 ][ 'thumbnail_medium' ];
2216 // Then we download the image and serve it to our client.
2217 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 );
2218 if ( strpos ( $httpstatus , '200 OK' )!== false )
2220 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
2221 header ( 'Content-Type: image/jpeg' );
2228 elseif ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
2230 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2231 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2232 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2233 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2234 if ( strpos ( $httpstatus , '200 OK' )!== false )
2236 // Extract the link to the thumbnail
2237 preg_match ( '!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!' , $data , $matches );
2238 if (! empty ( $matches [ 1 ]))
2239 { // Let's download the image.
2240 $imageurl = $matches [ 1 ];
2241 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2242 if ( strpos ( $httpstatus , '200 OK' )!== false )
2244 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2245 file_put_contents ( $filepath , $data ); // Save image to cache.
2246 if ( resizeImage ( $filepath ))
2248 header ( 'Content-Type: image/jpeg' );
2249 echo file_get_contents ( $filepath );
2257 elseif ( $domain == 'xkcd.com' || endsWith ( $domain , '.xkcd.com' ))
2259 // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2260 // http://xkcd.com/327/
2261 // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2262 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
2263 if ( strpos ( $httpstatus , '200 OK' )!== false )
2265 // Extract the link to the thumbnail
2266 preg_match ( '!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!' , $data , $matches );
2267 if (! empty ( $matches [ 1 ]))
2268 { // Let's download the image.
2269 $imageurl = $matches [ 1 ];
2270 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
2271 if ( strpos ( $httpstatus , '200 OK' )!== false )
2273 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2274 file_put_contents ( $filepath , $data ); // Save image to cache.
2275 if ( resizeImage ( $filepath ))
2277 header ( 'Content-Type: image/jpeg' );
2278 echo file_get_contents ( $filepath );
2288 // For all other domains, we try to download the image and make a thumbnail.
2289 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 30 ); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2290 if ( strpos ( $httpstatus , '200 OK' )!== false )
2292 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
2293 file_put_contents ( $filepath , $data ); // Save image to cache.
2294 if ( resizeImage ( $filepath ))
2296 header ( 'Content-Type: image/jpeg' );
2297 echo file_get_contents ( $filepath );
2304 // Otherwise, return an empty image (8x8 transparent gif)
2305 $blankgif = base64_decode ( 'R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7' );
2306 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname , $blankgif ); // Also put something in cache so that this URL is not requested twice.
2307 header ( 'Content-Type: image/gif' );
2311 // Make a thumbnail of the image (to width: 120 pixels)
2312 // Returns true if success, false otherwise.
2313 function resizeImage ( $filepath )
2315 if (! function_exists ( 'imagecreatefromjpeg' )) return false ; // GD not present: no thumbnail possible.
2317 // Trick: some stupid people rename GIF as JPEG... or else.
2318 // So we really try to open each image type whatever the extension is.
2319 $header = file_get_contents ( $filepath , false , NULL , 0 , 256 ); // Read first 256 bytes and try to sniff file type.
2321 $i = strpos ( $header , 'GIF8' ); if (( $i !== false ) && ( $i == 0 )) $im = imagecreatefromgif ( $filepath ); // Well this is crude, but it should be enough.
2322 $i = strpos ( $header , 'PNG' ); if (( $i !== false ) && ( $i == 1 )) $im = imagecreatefrompng ( $filepath );
2323 $i = strpos ( $header , 'JFIF' ); if ( $i !== false ) $im = imagecreatefromjpeg ( $filepath );
2324 if (! $im ) return false ; // Unable to open image (corrupted or not an image)
2327 $ystart = 0 ; $yheight = $h ;
2328 if ( $h > $w ) { $ystart
= ( $h
/ 2 )-( $w
/ 2 ); $yheight
= $w
/ 2 ; }
2329 $nw = 120 ; // Desired width
2330 $nh = min ( floor (( $h * $nw )/ $w ), 120 ); // Compute new width/height, but maximum 120 pixels height.
2332 $im2 = imagecreatetruecolor ( $nw , $nh );
2333 imagecopyresampled ( $im2 , $im , 0 , 0 , 0 , $ystart , $nw , $nh , $w , $yheight );
2334 imageinterlace ( $im2 , true ); // For progressive JPEG.
2335 $tempname = $filepath . '_TEMP.jpg' ;
2336 imagejpeg ( $im2 , $tempname , 90 );
2339 rename ( $tempname , $filepath ); // Overwrite original picture with thumbnail.
2343 // Invalidate caches when the database is changed or the user logs out.
2344 // (eg. tags cache).
2345 function invalidateCaches ()
2347 unset ( $_SESSION [ 'tags' ]); // Purge cache attached to session.
2348 pageCache
:: purgeCache (); // Purge page cache shared by sessions.
2351 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=genthumbnail' )) { genThumbnail (); exit ; } // Thumbnail generation/cache does not need the link database.
2352 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=rss' )) { showRSS (); exit ; }
2353 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=atom' )) { showATOM (); exit ; }
2354 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=dailyrss' )) { showDailyRSS (); exit ; }
2355 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=daily' )) { showDaily (); exit ; }
2356 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'ws=' )) { processWS (); exit ; } // Webservices (for jQuery/jQueryUI)
2357 if (! isset ( $_SESSION [ 'LINKS_PER_PAGE' ])) $_SESSION [ 'LINKS_PER_PAGE' ]= $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ];