]>
git.immae.eu Git - github/shaarli/Shaarli.git/blob - index.php
2 // Shaarli 0.0.32 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
8 // (but autocomplete fields will only work if you have php 5.2.x)
9 // -----------------------------------------------------------------------------------------------
11 $GLOBALS [ 'config' ][ 'DATADIR' ] = 'data' ; // Data subdirectory
12 $GLOBALS [ 'config' ][ 'CONFIG_FILE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/config.php' ; // Configuration file (user login/password)
13 $GLOBALS [ 'config' ][ 'DATASTORE' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/datastore.php' ; // Data storage file.
14 $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ] = 20 ; // Default links per page.
15 $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/ipbans.php' ; // File storage for failures and bans.
16 $GLOBALS [ 'config' ][ 'BAN_AFTER' ] = 4 ; // Ban IP after this many failures.
17 $GLOBALS [ 'config' ][ 'BAN_DURATION' ] = 1800 ; // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
18 $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ] = false ; // If true, anyone can add/edit/delete links without having to login
19 $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] = false ; // If true, the moment when links were saved are not shown to users that are not logged in.
20 $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ] = true ; // Enable thumbnails in links.
21 $GLOBALS [ 'config' ][ 'CACHEDIR' ] = 'cache' ; // Cache directory for thumbnails for SLOW services (like flickr)
22 $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ] = true ; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce webspace usage.
23 $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ] = '' ; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
24 // Note: You must have publisher.php in the same directory as Shaarli index.php
25 // -----------------------------------------------------------------------------------------------
26 // Program config (touch at your own risks !)
27 $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ] = $GLOBALS [ 'config' ][ 'DATADIR' ]. '/lastupdatecheck.txt' ; // For updates check of Shaarli.
28 $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ] = 86400 ; // Updates check frequency for Shaarli. 86400 seconds=24 hours
29 ini_set ( 'max_input_time' , '60' ); // High execution time in case of problematic imports/exports.
30 ini_set ( 'memory_limit' , '128M' ); // Try to set max upload file size and read (May not work on some hosts).
31 ini_set ( 'post_max_size' , '16M' );
32 ini_set ( 'upload_max_filesize' , '16M' );
33 define ( 'PHPPREFIX' , '<?php /* ' ); // Prefix to encapsulate data in php code.
34 define ( 'PHPSUFFIX' , ' */ ?>' ); // Suffix to encapsulate data in php code.
36 error_reporting ( E_ALL^E_WARNING
); // See all error except warnings.
37 //error_reporting(-1); // See all errors (for debugging only)
39 include "inc/rain.tpl.class.php" ; //include Rain TPL
40 raintpl
:: $tpl_dir = "tpl/" ; // template directory
41 raintpl
:: $cache_dir = "tmp/" ; // cache directory
45 // Optionnal config file.
46 if ( is_file ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' )) require ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/options.php' );
48 // In case stupid admin has left magic_quotes enabled in php.ini:
49 if ( get_magic_quotes_gpc ())
51 function stripslashes_deep ( $value ) { $value
= is_array ( $value
) ? array_map ( 'stripslashes_deep' , $value
) : stripslashes ( $value
); return $value
; }
52 $_POST = array_map ( 'stripslashes_deep' , $_POST );
53 $_GET = array_map ( 'stripslashes_deep' , $_GET );
54 $_COOKIE = array_map ( 'stripslashes_deep' , $_COOKIE );
56 // Prevent caching: (yes, it's ugly)
57 header ( "Last-Modified: " . gmdate ( "D, d M Y H:i:s" ) . " GMT" );
58 header ( "Cache-Control: no-store, no-cache, must-revalidate" );
59 header ( "Cache-Control: post-check=0, pre-check=0" , false );
60 header ( "Pragma: no-cache" );
61 define ( 'shaarli_version' , '0.0.32 beta' );
62 if (! is_dir ( $GLOBALS [ 'config' ][ 'DATADIR' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'DATADIR' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'DATADIR' ], 0705 ); }
63 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.
64 if ( $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ])
66 if (! is_dir ( $GLOBALS [ 'config' ][ 'CACHEDIR' ])) { mkdir ( $GLOBALS
[ 'config' ][ 'CACHEDIR' ], 0705 ); chmod ( $GLOBALS
[ 'config' ][ 'CACHEDIR' ], 0705 ); }
67 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.
69 if (! is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ])) install ();
70 require $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]; // Read login/password hash into $GLOBALS.
71 // Small protection against dodgy config files:
72 if ( empty ( $GLOBALS [ 'title' ])) $GLOBALS [ 'title' ]= 'Shared links on ' . htmlspecialchars ( indexUrl ());
73 if ( empty ( $GLOBALS [ 'timezone' ])) $GLOBALS [ 'timezone' ]= date_default_timezone_get ();
74 autoLocale (); // Sniff browser language and set date format accordingly.
75 header ( 'Content-Type: text/html; charset=utf-8' ); // We use UTF-8 for proper international characters handling.
79 function checkphpversion ()
81 if ( version_compare ( PHP_VERSION
, '5.1.0' ) < 0 )
83 header ( 'Content-Type: text/plain; charset=utf-8' );
84 echo 'Your server supports php ' . PHP_VERSION
. '. Shaarli requires at last php 5.1.0, and thus cannot run. Sorry.' ;
89 // Checks if an update is available for Shaarli.
90 // (at most once a day, and only for registered user.)
91 // Output: '' = no new version.
92 // other= the available version.
93 function checkUpdate ()
95 if (! isLoggedIn ()) return '' ; // Do not check versions for visitors.
97 // Get latest version number at most once a day.
98 if (! is_file ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]) || ( filemtime ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ])< time ()-( $GLOBALS [ 'config' ][ 'UPDATECHECK_INTERVAL' ])))
100 $version = shaarli_version
;
101 list ( $httpstatus , $headers , $data ) = getHTTP ( 'http://sebsauvage.net/files/shaarli_version.txt' , 2 );
102 if ( strpos ( $httpstatus , '200 OK' )!== false ) $version = $data ;
103 // If failed, nevermind. We don't want to bother the user with that.
104 file_put_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ], $version ); // touch file date
107 $newestversion = file_get_contents ( $GLOBALS [ 'config' ][ 'UPDATECHECK_FILENAME' ]);
108 if ( version_compare ( $newestversion , shaarli_version
)== 1 ) return $newestversion ;
112 // -----------------------------------------------------------------------------------------------
114 function logm ( $message )
116 $t = strval ( date ( 'Y/m/d_H:i:s' )). ' - ' . $_SERVER [ "REMOTE_ADDR" ]. ' - ' . strval ( $message ). " \n " ;
117 file_put_contents ( $GLOBALS [ 'config' ][ 'DATADIR' ]. '/log.txt' , $t , FILE_APPEND
);
120 /* Returns the small hash of a string
121 eg. smallHash('20111006_131924') --> yZH23w
123 - are unique (well, as unique as crc32, at last)
124 - are always 6 characters long.
125 - only use the following characters: a-z A-Z 0-9 - _ @
126 - are NOT cryptographically secure (they CAN be forged)
127 In Shaarli, they are used as a tinyurl-like link to individual entries.
129 function smallHash ( $text )
131 $t = rtrim ( base64_encode ( hash ( 'crc32' , $text , true )), '=' );
132 $t = str_replace ( '+' , '-' , $t ); // Get rid of characters which need encoding in URLs.
133 $t = str_replace ( '/' , '_' , $t );
134 $t = str_replace ( '=' , '@' , $t );
138 // Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
139 function text2clickable ( $url )
141 $redir = empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ];
142 return preg_replace ( '!((?:https?|ftp)://\S+[[:alnum:]]/?)!si' , '<a href="' . $redir . ' $1" rel="nofollow"> $1 </a>' , $url );
145 // This function inserts where relevant so that multiple spaces are properly displayed in HTML
146 // even in the absence of <pre> (This is used in description to keep text formatting)
147 function keepMultipleSpaces ( $text )
149 return str_replace ( ' ' , ' ' , $text );
152 // ------------------------------------------------------------------------------------------
153 // Sniff browser language to display dates in the right format automatically.
154 // (Note that is may not work on your server if the corresponding local is not installed.)
155 function autoLocale ()
157 $loc = 'en_US' ; // Default if browser does not send HTTP_ACCEPT_LANGUAGE
158 if ( isset ( $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ])) // eg. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
159 { // (It's a bit crude, but it works very well. Prefered language is always presented first.)
160 if ( preg_match ( '/([a-z] {2} (-[a-z] {2} )?)/i' , $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ], $matches )) $loc = $matches [ 1 ];
162 setlocale ( LC_TIME
, $loc ); // LC_TIME = Set local for date/time format only.
165 // ------------------------------------------------------------------------------------------
166 // PubSubHubbub protocol support (if enabled) [UNTESTED]
167 // (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
168 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ])) include './publisher.php' ;
171 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
173 $p = new Publisher ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]);
175 indexUrl (). '?do=atom' ,
178 $p- > publish_update ( $topic_url );
182 // ------------------------------------------------------------------------------------------
183 // Session management
184 define ( 'INACTIVITY_TIMEOUT' , 3600 ); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
185 ini_set ( 'session.use_cookies' , 1 ); // Use cookies to store session.
186 ini_set ( 'session.use_only_cookies' , 1 ); // Force cookies for session (phpsessionID forbidden in URL)
187 ini_set ( 'session.use_trans_sid' , false ); // Prevent php to use sessionID in URL if cookies are disabled.
188 session_name ( 'shaarli' );
191 // Returns the IP address of the client (Used to prevent session cookie hijacking.)
194 $ip = $_SERVER [ "REMOTE_ADDR" ];
195 // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
196 if ( isset ( $_SERVER [ 'HTTP_X_FORWARDED_FOR' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_X_FORWARDED_FOR' ]; }
197 if ( isset ( $_SERVER [ 'HTTP_CLIENT_IP' ])) { $ip
= $ip
. '_' . $_SERVER
[ 'HTTP_CLIENT_IP' ]; }
201 // Check that user/password is correct.
202 function check_auth ( $login , $password )
204 $hash = sha1 ( $password . $login . $GLOBALS [ 'salt' ]);
205 if ( $login == $GLOBALS [ 'login' ] && $hash == $GLOBALS [ 'hash' ])
206 { // Login/password is correct.
207 $_SESSION [ 'uid' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // generate unique random number (different than phpsessionid)
208 $_SESSION [ 'ip' ]= allIPs (); // We store IP address(es) of the client to make sure session is not hijacked.
209 $_SESSION [ 'username' ]= $login ;
210 $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Set session expiration.
211 logm ( 'Login successful' );
214 logm ( 'Login failed for user ' . $login );
218 // Returns true if the user is logged in.
219 function isLoggedIn ()
221 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) return true ;
223 // If session does not exist on server side, or IP address has changed, or session has expired, logout.
224 if ( empty ( $_SESSION [ 'uid' ]) || $_SESSION [ 'ip' ]!= allIPs () || time ()>= $_SESSION [ 'expires_on' ])
229 if (! empty ( $_SESSION [ 'longlastingsession' ])) $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // In case of "Stay signed in" checked.
230 else $_SESSION [ 'expires_on' ]= time () +INACTIVITY_TIMEOUT
; // Standard session expiration date.
236 function logout () { if ( isset ( $_SESSION
)) { unset ( $_SESSION
[ 'uid' ]); unset ( $_SESSION
[ 'ip' ]); unset ( $_SESSION
[ 'username' ]);} }
239 // ------------------------------------------------------------------------------------------
240 // Brute force protection system
241 // Several consecutive failed logins will ban the IP address for 30 minutes.
242 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 ?>" );
243 include $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ];
244 // Signal a failed login. Will ban the IP if too many failures:
245 function ban_loginFailed ()
247 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
248 if (! isset ( $gb [ 'FAILURES' ][ $ip ])) $gb [ 'FAILURES' ][ $ip ]= 0 ;
249 $gb [ 'FAILURES' ][ $ip ] ++
;
250 if ( $gb [ 'FAILURES' ][ $ip ]>( $GLOBALS [ 'config' ][ 'BAN_AFTER' ]- 1 ))
252 $gb [ 'BANS' ][ $ip ]= time () +
$GLOBALS [ 'config' ][ 'BAN_DURATION' ];
253 logm ( 'IP address banned from login' );
255 $GLOBALS [ 'IPBANS' ] = $gb ;
256 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
259 // Signals a successful login. Resets failed login counter.
260 function ban_loginOk ()
262 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
263 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
264 $GLOBALS [ 'IPBANS' ] = $gb ;
265 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
268 // Checks if the user CAN login. If 'true', the user can try to login.
269 function ban_canLogin ()
271 $ip = $_SERVER [ "REMOTE_ADDR" ]; $gb = $GLOBALS [ 'IPBANS' ];
272 if ( isset ( $gb [ 'BANS' ][ $ip ]))
274 // User is banned. Check if the ban has expired:
275 if ( $gb [ 'BANS' ][ $ip ]<= time ())
276 { // Ban expired, user can try to login again.
278 unset ( $gb [ 'FAILURES' ][ $ip ]); unset ( $gb [ 'BANS' ][ $ip ]);
279 file_put_contents ( $GLOBALS [ 'config' ][ 'IPBANS_FILENAME' ], "<?php \n\$ GLOBALS['IPBANS']=" . var_export ( $gb , true ). "; \n ?>" );
280 return true ; // Ban has expired, user can login.
282 return false ; // User is banned.
284 return true ; // User is not banned.
287 // ------------------------------------------------------------------------------------------
288 // Process login form: Check if login/password is correct.
289 if ( isset ( $_POST [ 'login' ]))
291 if (! ban_canLogin ()) die ( 'I said: NO. You are banned for the moment. Go away.' );
292 if ( isset ( $_POST [ 'password' ]) && tokenOk ( $_POST [ 'token' ]) && ( check_auth ( $_POST [ 'login' ], $_POST [ 'password' ])))
293 { // Login/password is ok.
295 // If user wants to keep the session cookie even after the browser closes:
296 if (! empty ( $_POST [ 'longlastingsession' ]))
298 $_SESSION [ 'longlastingsession' ]= 31536000 ; // (31536000 seconds = 1 year)
299 $_SESSION [ 'expires_on' ]= time () +
$_SESSION [ 'longlastingsession' ]; // Set session expiration on server-side.
300 session_set_cookie_params ( $_SESSION [ 'longlastingsession' ]); // Set session cookie expiration on client side
301 session_regenerate_id ( true ); // Send cookie with new expiration date to browser.
303 else // Standard session expiration (=when browser closes)
305 session_set_cookie_params ( 0 ); // 0 means "When browser closes"
306 session_regenerate_id ( true );
308 // Optional redirect after login:
309 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 ; }
310 if ( isset ( $_POST [ 'returnurl' ]))
312 if ( endsWith ( $_POST [ 'returnurl' ], '?do=login' )) { header ( 'Location: ?' ); exit ; } // Prevent loops over login screen.
313 header ( 'Location: ' . $_POST [ 'returnurl' ]); exit ;
315 header ( 'Location: ?' ); exit ;
320 echo '<script language="JavaScript">alert("Wrong login/password.");document.location= \' ?do=login \' ;</script>' ; // Redirect to login screen.
325 // ------------------------------------------------------------------------------------------
326 // Misc utility functions:
328 // Returns the server URL (including port and http/https), without path.
329 // eg. "http://myserver.com:8080"
330 // You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
333 $serverport = ( $_SERVER [ "SERVER_PORT" ]== '80' || (! empty ( $_SERVER [ 'HTTPS' ]) && $_SERVER [ "SERVER_PORT" ]== '443' ) ? '' : ':' . $_SERVER [ "SERVER_PORT" ]);
334 return 'http' .(! empty ( $_SERVER [ 'HTTPS' ])? 's' : '' ). '://' . $_SERVER [ "SERVER_NAME" ]. $serverport ;
339 return serverUrl () . ( $_SERVER [ "SCRIPT_NAME" ] == '/index.php' ? '' : $_SERVER [ "SCRIPT_NAME" ]);
342 // Convert post_max_size/upload_max_filesize (eg.'16M') parameters to bytes.
343 function return_bytes ( $val )
345 $val = trim ( $val ); $last = strtolower ( $val [ strlen ( $val )- 1 ]);
348 case 'g' : $val *= 1024 ;
349 case 'm' : $val *= 1024 ;
350 case 'k' : $val *= 1024 ;
355 // Try to determine max file size for uploads (POST).
356 // Returns an integer (in bytes)
357 function getMaxFileSize ()
359 $size1 = return_bytes ( ini_get ( 'post_max_size' ));
360 $size2 = return_bytes ( ini_get ( 'upload_max_filesize' ));
361 // Return the smaller of two:
362 $maxsize = min ( $size1 , $size2 );
363 // FIXME: Then convert back to readable notations ? (eg. 2M instead of 2000000)
367 // Tells if a string start with a substring or not.
368 function startsWith ( $haystack , $needle , $case = true )
370 if ( $case ){ return ( strcmp ( substr ( $haystack
, 0 , strlen ( $needle
)), $needle
)=== 0 );}
371 return ( strcasecmp ( substr ( $haystack , 0 , strlen ( $needle )), $needle )=== 0 );
374 // Tells if a string ends with a substring or not.
375 function endsWith ( $haystack , $needle , $case = true )
377 if ( $case ){ return ( strcmp ( substr ( $haystack
, strlen ( $haystack
) - strlen ( $needle
)), $needle
)=== 0 );}
378 return ( strcasecmp ( substr ( $haystack , strlen ( $haystack ) - strlen ( $needle )), $needle )=== 0 );
381 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
382 (used to build the ADD_DATE attribute in Netscape-bookmarks file)
383 PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
384 function linkdate2timestamp ( $linkdate )
387 $r = sscanf ( $linkdate , '%4d%2d%2d_%2d%2d%2d' , $Y , $M , $D , $h , $m , $s );
388 return mktime ( $h , $m , $s , $M , $D , $Y );
391 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
392 (used to build the pubDate attribute in RSS feed.) */
393 function linkdate2rfc822 ( $linkdate )
395 return date ( 'r' , linkdate2timestamp ( $linkdate )); // 'r' is for RFC822 date format.
398 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
399 (used to build the updated tags in ATOM feed.) */
400 function linkdate2iso8601 ( $linkdate )
402 return date ( 'c' , linkdate2timestamp ( $linkdate )); // 'c' is for ISO 8601 date format.
405 /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a localized date format.
406 (used to display link date on screen)
407 The date format is automatically chosen according to locale/languages sniffed from browser headers (see autoLocale()). */
408 function linkdate2locale ( $linkdate )
410 return utf8_encode ( strftime ( '%c' , linkdate2timestamp ( $linkdate ))); // %c is for automatic date format according to locale.
411 // Note that if you use a local which is not installed on your webserver,
412 // the date will not be displayed in the chosen locale, but probably in US notation.
415 // Parse HTTP response headers and return an associative array.
416 function http_parse_headers_shaarli ( $headers )
419 foreach ( $headers as $header )
421 $i = strpos ( $header , ': ' );
424 $key = substr ( $header , 0 , $i );
425 $value = substr ( $header , $i +
2 , strlen ( $header )- $i-2 );
433 Input: $url : url to get (http://...)
434 $timeout : Network timeout (will wait this many seconds for an anwser before giving up).
435 Output: An array. [0] = HTTP status message (eg. "HTTP/1.1 200 OK") or error message
436 [1] = associative array containing HTTP response headers (eg. echo getHTTP($url)[1]['Content-Type'])
438 Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
439 if (strpos($httpstatus,'200 OK')!==false)
440 echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
442 echo 'There was an error: '.htmlspecialchars($httpstatus)
444 function getHTTP ( $url , $timeout = 30 )
448 $options = array ( 'http' => array ( 'method' => 'GET' , 'timeout' => $timeout )); // Force network timeout
449 $context = stream_context_create ( $options );
450 $data = file_get_contents ( $url , false , $context ,- 1 , 4000000 ); // We download at most 4 Mb from source.
451 if (! $data ) { $lasterror
= error_get_last (); return array ( $lasterror
[ 'message' ], array (), '' ); }
452 $httpStatus = $http_response_header [ 0 ]; // eg. "HTTP/1.1 200 OK"
453 $responseHeaders = http_parse_headers_shaarli ( $http_response_header );
454 return array ( $httpStatus , $responseHeaders , $data );
456 catch ( Exception
$e ) // getHTTP *can* fail silentely (we don't care if the title cannot be fetched)
458 return array ( $e- > getMessage (), '' , '' );
462 // Extract title from an HTML document.
463 // (Returns an empty string if not found.)
464 function html_extract_title ( $html )
466 return preg_match ( '!<title>(.*?)</title>!is' , $html , $matches ) ? trim ( str_replace ( " \n " , ' ' , $matches [ 1 ])) : '' ;
469 // ------------------------------------------------------------------------------------------
470 // Token management for XSRF protection
471 // Token should be used in any form which acts on data (create,update,delete,import...).
472 if (! isset ( $_SESSION [ 'tokens' ])) $_SESSION [ 'tokens' ]= array (); // Token are attached to the session.
477 $rnd = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // We generate a random string.
478 $_SESSION [ 'tokens' ][ $rnd ]= 1 ; // Store it on the server side.
482 // Tells if a token is ok. Using this function will destroy the token.
484 function tokenOk ( $token )
486 if ( isset ( $_SESSION [ 'tokens' ][ $token ]))
488 unset ( $_SESSION [ 'tokens' ][ $token ]); // Token is used: destroy it.
489 return true ; // Token is ok.
491 return false ; // Wrong token, or already used.
494 // ------------------------------------------------------------------------------------------
495 /* This class is in charge of building the final page.
496 (This is basically a wrapper around RainTPL which pre-fills some fields.)
498 p.assign('myfield','myvalue');
499 p.renderPage('mytemplate');
504 private $tpl ; // RainTPL template
505 function __construct ()
510 private function initialize ()
513 $this- > tpl
= new RainTPL
;
514 $this- > tpl
-> assign ( 'newversion' , checkUpdate ());
515 $this- > tpl
-> assign ( 'linkcount' , count ( $LINKSDB ));
516 $this- > tpl
-> assign ( 'feedurl' , htmlspecialchars ( indexUrl ()));
517 $searchcrits = '' ; // Search criteria
518 if (! empty ( $_GET [ 'searchtags' ])) $searchcrits .= '&searchtags=' . $_GET [ 'searchtags' ];
519 elseif (! empty ( $_GET [ 'searchterm' ])) $searchcrits .= '&searchterm=' . $_GET [ 'searchterm' ];
520 $this- > tpl
-> assign ( 'searchcrits' , $searchcrits );
521 $this- > tpl
-> assign ( 'source' , indexUrl ());
522 $this- > tpl
-> assign ( 'version' , shaarli_version
);
523 $this- > tpl
-> assign ( 'pagetitle' , 'Shaarli' );
524 if (! empty ( $GLOBALS [ 'title' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'title' ]);
525 if (! empty ( $GLOBALS [ 'pagetitle' ])) $this- > tpl
-> assign ( 'pagetitle' , $GLOBALS [ 'pagetitle' ]);
526 $this- > tpl
-> assign ( 'shaarlititle' , empty ( $GLOBALS [ 'title' ]) ? 'Shaarli' : $GLOBALS [ 'title' ] );
530 // The following assign() method is basically the same as RainTPL (except that it's lazy)
531 public function assign ( $what , $where )
533 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
534 $this- > tpl
-> assign ( $what , $where );
537 // Render a specific page (using a template).
538 // eg. pb.renderPage('picwall')
539 public function renderPage ( $page )
541 if ( $this- > tpl
=== false ) $this- > initialize (); // Lazy initialization
542 $this- > tpl
-> draw ( $page );
546 // ------------------------------------------------------------------------------------------
547 /* Data storage for links.
548 This object behaves like an associative array.
550 $mylinks = new linkdb();
551 echo $mylinks['20110826_161819']['title'];
552 foreach($mylinks as $link)
553 echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description'];
555 We implement 3 interfaces:
556 - ArrayAccess so that this object behaves like an associative array.
557 - Iterator so that this object can be used in foreach() loops.
558 - Countable interface so that we can do a count() on this object.
560 class linkdb
implements Iterator
, Countable
, ArrayAccess
562 private $links ; // List of links (associative array. Key=linkdate (eg. "20110823_124546"), value= associative array (keys:title,description...)
563 private $urls ; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate)
564 private $keys ; // List of linkdate keys (for the Iterator interface implementation)
565 private $position ; // Position in the $this->keys array. (for the Iterator interface implementation.)
566 private $loggedin ; // Is the used logged in ? (used to filter private links)
569 function __construct ( $isLoggedIn )
570 // Input : $isLoggedIn : is the used logged in ?
572 $this- > loggedin
= $isLoggedIn ;
573 $this- > checkdb (); // Make sure data file exists.
574 $this- > readdb (); // Then read it.
577 // ---- Countable interface implementation
578 public function count () { return count ( $this
-> links
); }
580 // ---- ArrayAccess interface implementation
581 public function offsetSet ( $offset , $value )
583 if (! $this- > loggedin
) die ( 'You are not authorized to add a link.' );
584 if ( empty ( $value [ 'linkdate' ]) || empty ( $value [ 'url' ])) die ( 'Internal Error: A link should always have a linkdate and url.' );
585 if ( empty ( $offset )) die ( 'You must specify a key.' );
586 $this- > links
[ $offset ] = $value ;
587 $this- > urls
[ $value [ 'url' ]]= $offset ;
589 public function offsetExists ( $offset ) { return array_key_exists ( $offset
, $this
-> links
); }
590 public function offsetUnset ( $offset )
592 if (! $this- > loggedin
) die ( 'You are not authorized to delete a link.' );
593 $url = $this- > links
[ $offset ][ 'url' ]; unset ( $this- > urls
[ $url ]);
594 unset ( $this- > links
[ $offset ]);
596 public function offsetGet ( $offset ) { return isset ( $this
-> links
[ $offset
]) ? $this
-> links
[ $offset
] : null ; }
598 // ---- Iterator interface implementation
599 function rewind () { $this
-> keys
= array_keys ( $this
-> links
); rsort ( $this
-> keys
); $this
-> position
= 0 ; } // Start over for iteration, ordered by date (latest first).
600 function key () { return $this
-> keys
[ $this
-> position
]; } // current key
601 function current () { return $this
-> links
[ $this
-> keys
[ $this
-> position
]]; } // current value
602 function next () { ++$this
-> position
; } // go to next item
603 function valid () { return isset ( $this
-> keys
[ $this
-> position
]); } // Check if current position is valid.
606 private function checkdb () // Check if db directory and file exists.
608 if (! file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ])) // Create a dummy database for example.
610 $this- > links
= array ();
611 $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' );
612 $this- > links
[ $link [ 'linkdate' ]] = $link ;
613 $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' );
614 $this- > links
[ $link [ 'linkdate' ]] = $link ;
615 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
); // Write database to disk
619 // Read database from disk to memory
620 private function readdb ()
623 $this- > links
=( file_exists ( $GLOBALS [ 'config' ][ 'DATASTORE' ]) ? unserialize ( gzinflate ( base64_decode ( substr ( file_get_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ]), strlen ( PHPPREFIX
),- strlen ( PHPSUFFIX
))))) : array () );
624 // Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439
626 // If user is not logged in, filter private links.
627 if (! $this- > loggedin
)
630 foreach ( $this- > links
as $link ) { if ( $link
[ 'private' ]!= 0 ) $toremove
[]= $link
[ 'linkdate' ]; }
631 foreach ( $toremove as $linkdate ) { unset ( $this
-> links
[ $linkdate
]); }
634 // Keep the list of the mapping URLs-->linkdate up-to-date.
636 foreach ( $this- > links
as $link ) { $this
-> urls
[ $link
[ 'url' ]]= $link
[ 'linkdate' ]; }
639 // Save database from memory to disk.
640 public function savedb ()
642 if (! $this- > loggedin
) die ( 'You are not authorized to change the database.' );
643 file_put_contents ( $GLOBALS [ 'config' ][ 'DATASTORE' ], PHPPREFIX
. base64_encode ( gzdeflate ( serialize ( $this- > links
))). PHPSUFFIX
);
646 // Returns the link for a given URL (if it exists). false it does not exist.
647 public function getLinkFromUrl ( $url )
649 if ( isset ( $this- > urls
[ $url ])) return $this- > links
[ $this- > urls
[ $url ]];
653 // Case insentitive search among links (in url, title and description). Returns filtered list of links.
654 // eg. print_r($mydb->filterFulltext('hollandais'));
655 public function filterFulltext ( $searchterms )
657 // FIXME: explode(' ',$searchterms) and perform a AND search.
658 // FIXME: accept double-quotes to search for a string "as is" ?
660 $s = strtolower ( $searchterms );
661 foreach ( $this- > links
as $l )
663 $found = ( strpos ( strtolower ( $l [ 'title' ]), $s )!== false )
664 || ( strpos ( strtolower ( $l [ 'description' ]), $s )!== false )
665 || ( strpos ( strtolower ( $l [ 'url' ]), $s )!== false )
666 || ( strpos ( strtolower ( $l [ 'tags' ]), $s )!== false );
667 if ( $found ) $filtered [ $l [ 'linkdate' ]] = $l ;
674 // You can specify one or more tags (tags can be separated by space or comma).
675 // eg. print_r($mydb->filterTags('linux programming'));
676 public function filterTags ( $tags , $casesensitive = false )
678 $t = str_replace ( ',' , ' ' ,( $casesensitive ? $tags : strtolower ( $tags )));
679 $searchtags = explode ( ' ' , $t );
681 foreach ( $this- > links
as $l )
683 $linktags = explode ( ' ' ,( $casesensitive ? $l [ 'tags' ]: strtolower ( $l [ 'tags' ])));
684 if ( count ( array_intersect ( $linktags , $searchtags )) == count ( $searchtags ))
685 $filtered [ $l [ 'linkdate' ]] = $l ;
691 // Filter by smallHash.
692 // Only 1 article is returned.
693 public function filterSmallHash ( $smallHash )
696 foreach ( $this- > links
as $l )
698 if ( $smallHash == smallHash ( $l [ 'linkdate' ])) // Yes, this is ugly and slow
700 $filtered [ $l [ 'linkdate' ]] = $l ;
707 // Returns the list of all tags
708 // Output: associative array key=tags, value=0
709 public function allTags ()
712 foreach ( $this- > links
as $link )
713 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
714 if (! empty ( $tag )) $tags [ $tag ]=( empty ( $tags [ $tag ]) ? 1 : $tags [ $tag ] +
1 );
715 arsort ( $tags ); // Sort tags by usage (most used tag first)
720 // ------------------------------------------------------------------------------------------
721 // Ouput the last 50 links in RSS 2.0 format.
726 // Optionnaly filter the results:
727 $linksToDisplay = array ();
728 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
729 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
730 else $linksToDisplay = $LINKSDB ;
732 header ( 'Content-Type: application/rss+xml; charset=utf-8' );
733 $pageaddr = htmlspecialchars ( indexUrl ());
734 echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">' ;
735 echo '<channel><title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title><link>' . $pageaddr . '</link>' ;
736 echo '<description>Shared links</description><language>en-en</language><copyright>' . $pageaddr . '</copyright>' . " \n\n " ;
737 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
739 echo '<!-- PubSubHubbub Discovery -->' ;
740 echo '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" xmlns="http://www.w3.org/2005/Atom" />' ;
741 echo '<link rel="self" href="' . htmlspecialchars ( $pageaddr ). '?do=rss" xmlns="http://www.w3.org/2005/Atom" />' ;
742 echo '<!-- End Of PubSubHubbub Discovery -->' ;
745 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
746 while ( $i < 50 && $i < count ( $keys ))
748 $link = $linksToDisplay [ $keys [ $i ]];
749 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
750 $rfc822date = linkdate2rfc822 ( $link [ 'linkdate' ]);
751 $absurl = htmlspecialchars ( $link [ 'url' ]);
752 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
753 echo '<item><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><guid>' . $guid . '</guid><link>' . $absurl . '</link>' ;
754 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) echo '<pubDate>' . htmlspecialchars ( $rfc822date ). "</pubDate> \n " ;
755 if ( $link [ 'tags' ]!= '' ) // Adding tags to each RSS entry (as mentioned in RSS specification)
757 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag ) { echo '<category domain="' . htmlspecialchars ( $pageaddr
). '">' . htmlspecialchars ( $tag
). '</category>' . " \n " ; }
759 echo '<description><![CDATA[' . nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ])))). ']]></description>' . " \n </item> \n " ;
762 echo '</channel></rss>' ;
766 // ------------------------------------------------------------------------------------------
767 // Ouput the last 50 links in ATOM format.
772 // Optionnaly filter the results:
773 $linksToDisplay = array ();
774 if (! empty ( $_GET [ 'searchterm' ])) $linksToDisplay = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
775 elseif (! empty ( $_GET [ 'searchtags' ])) $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
776 else $linksToDisplay = $LINKSDB ;
778 header ( 'Content-Type: application/atom+xml; charset=utf-8' );
779 $pageaddr = htmlspecialchars ( indexUrl ());
783 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // No, I can't use array_keys().
784 while ( $i < 50 && $i < count ( $keys ))
786 $link = $linksToDisplay [ $keys [ $i ]];
787 $guid = $pageaddr . '?' . smallHash ( $link [ 'linkdate' ]);
788 $iso8601date = linkdate2iso8601 ( $link [ 'linkdate' ]);
789 $latestDate = max ( $latestDate , $iso8601date );
790 $absurl = htmlspecialchars ( $link [ 'url' ]);
791 if ( startsWith ( $absurl , '?' )) $absurl = $pageaddr . $absurl ; // make permalink URL absolute
792 $entries .= '<entry><title>' . htmlspecialchars ( $link [ 'title' ]). '</title><link href="' . $absurl . '" /><id>' . $guid . '</id>' ;
793 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $entries .= '<updated>' . htmlspecialchars ( $iso8601date ). '</updated>' ;
794 $entries .= '<summary>' . nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ])))). "</summary> \n " ;
795 if ( $link [ 'tags' ]!= '' ) // Adding tags to each ATOM entry (as mentioned in ATOM specification)
797 foreach ( explode ( ' ' , $link [ 'tags' ]) as $tag )
798 { $entries
.= '<category scheme="' . htmlspecialchars ( $pageaddr
, ENT_QUOTES
). '" term="' . htmlspecialchars ( $tag
, ENT_QUOTES
). '" />' . " \n " ; }
800 $entries .= "</entry> \n " ;
803 $feed = '<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">' ;
804 $feed .= '<title>' . htmlspecialchars ( $GLOBALS [ 'title' ]). '</title>' ;
805 if (! $GLOBALS [ 'config' ][ 'HIDE_TIMESTAMPS' ] || isLoggedIn ()) $feed .= '<updated>' . htmlspecialchars ( $latestDate ). '</updated>' ;
806 $feed .= '<link rel="self" href="' . htmlspecialchars ( $pageaddr ). '" />' ;
807 if (! empty ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]))
809 $feed .= '<!-- PubSubHubbub Discovery -->' ;
810 $feed .= '<link rel="hub" href="' . htmlspecialchars ( $GLOBALS [ 'config' ][ 'PUBSUBHUB_URL' ]). '" />' ;
811 $feed .= '<!-- End Of PubSubHubbub Discovery -->' ;
813 $feed .= '<author><uri>' . htmlspecialchars ( $pageaddr ). '</uri></author>' ;
814 $feed .= '<id>' . htmlspecialchars ( $pageaddr ). '</id>' . " \n\n " ; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
821 // ------------------------------------------------------------------------------------------
822 // Render HTML page (according to URL parameters and user rights)
823 function renderPage ()
827 // -------- Display login form.
828 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=login' ))
830 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) { header ( 'Location: ?' ); exit ; } // No need to login for open Shaarli
831 $token = '' ; if ( ban_canLogin ()) $token = getToken (); // Do not waste token generation if not useful.
832 $PAGE = new pageBuilder
;
833 $PAGE- > assign ( 'token' , $token );
834 $PAGE- > assign ( 'returnurl' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ]: '' ));
835 $PAGE- > renderPage ( 'loginform' );
838 // -------- User wants to logout.
839 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=logout' ))
843 header ( 'Location: ?' );
847 // -------- Picture wall
848 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=picwall' ))
850 // Optionnaly filter the results:
852 if (! empty ( $_GET [ 'searchterm' ])) $links = $LINKSDB- > filterFulltext ( $_GET [ 'searchterm' ]);
853 elseif (! empty ( $_GET [ 'searchtags' ])) $links = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
854 else $links = $LINKSDB ;
856 $linksToDisplay = array ();
858 // Get only links which have a thumbnail.
859 foreach ( $links as $link )
861 $permalink = '?' . htmlspecialchars ( smallhash ( $link [ 'linkdate' ]), ENT_QUOTES
);
862 $thumb = thumbnail ( $link [ 'url' ], $permalink );
863 if ( $thumb != '' ) // Only output links which have a thumbnail.
865 $link [ 'thumbnail' ]= $thumb ; // Thumbnail HTML code.
866 $link [ 'permalink' ]= $permalink ;
867 $linksToDisplay []= $link ; // Add to array.
870 $PAGE = new pageBuilder
;
871 $PAGE- > assign ( 'linksToDisplay' , $linksToDisplay );
872 $PAGE- > renderPage ( 'picwall' );
876 // -------- Tag cloud
877 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tagcloud' ))
879 $tags = $LINKSDB- > allTags ();
880 // We sort tags alphabetically, then choose a font size according to count.
881 // First, find max value.
882 $maxcount = 0 ; foreach ( $tags as $key => $value ) $maxcount = max ( $maxcount , $value );
885 foreach ( $tags as $key => $value )
887 $tagList [ $key ] = array ( 'count' => $value , 'size' => max ( 40 * $value / $maxcount , 8 ));
889 $PAGE = new pageBuilder
;
890 $PAGE- > assign ( 'tags' , $tagList );
891 $PAGE- > renderPage ( 'tagcloud' );
895 // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
896 if ( isset ( $_GET [ 'addtag' ]))
898 // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
899 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?searchtags=' . urlencode ( $_GET
[ 'addtag' ])); exit ; } // In case browser does not send HTTP_REFERER
900 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
901 $params [ 'searchtags' ] = ( empty ( $params [ 'searchtags' ]) ? trim ( $_GET [ 'addtag' ]) : trim ( $params [ 'searchtags' ]). ' ' . urlencode ( trim ( $_GET [ 'addtag' ])));
902 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
903 header ( 'Location: ?' . http_build_query ( $params ));
907 // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
908 if ( isset ( $_GET [ 'removetag' ]))
910 // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
911 if ( empty ( $_SERVER [ 'HTTP_REFERER' ])) { header ( 'Location: ?' ); exit ; } // In case browser does not send HTTP_REFERER
912 parse_str ( parse_url ( $_SERVER [ 'HTTP_REFERER' ], PHP_URL_QUERY
), $params );
913 if ( isset ( $params [ 'searchtags' ]))
915 $tags = explode ( ' ' , $params [ 'searchtags' ]);
916 $tags = array_diff ( $tags , array ( $_GET [ 'removetag' ])); // Remove value from array $tags.
917 if ( count ( $tags )== 0 ) unset ( $params [ 'searchtags' ]); else $params [ 'searchtags' ] = implode ( ' ' , $tags );
918 unset ( $params [ 'page' ]); // We also remove page (keeping the same page has no sense, since the results are different)
920 header ( 'Location: ?' . http_build_query ( $params ));
924 // -------- User wants to change the number of links per page (linksperpage=...)
925 if ( isset ( $_GET [ 'linksperpage' ]))
927 if ( is_numeric ( $_GET [ 'linksperpage' ])) { $_SESSION
[ 'LINKS_PER_PAGE' ]= abs ( intval ( $_GET
[ 'linksperpage' ])); }
928 header ( 'Location: ' .( empty ( $_SERVER [ 'HTTP_REFERER' ])? '?' : $_SERVER [ 'HTTP_REFERER' ]));
933 // -------- Handle other actions allowed for non-logged in users:
936 // User tries to post new link but is not loggedin:
937 // Show login screen, then redirect to ?post=...
938 if ( isset ( $_GET [ 'post' ]))
940 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.
943 $PAGE = new pageBuilder
;
944 buildLinkList ( $PAGE ); // Compute list of links to display
945 $PAGE- > renderPage ( 'linklist' );
946 exit ; // Never remove this one ! All operations below are reserved for logged in user.
949 // -------- All other functions are reserved for the registered user:
951 // -------- Display the Tools menu if requested (import/export/bookmarklet...)
952 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=tools' ))
954 $PAGE = new pageBuilder
;
955 $PAGE- > assign ( 'pageabsaddr' , indexUrl ());
956 $PAGE- > renderPage ( 'tools' );
960 // -------- User wants to change his/her password.
961 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changepasswd' ))
963 if ( $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]) die ( 'You are not supposed to change a password on an Open Shaarli.' );
964 if (! empty ( $_POST [ 'setpassword' ]) && ! empty ( $_POST [ 'oldpassword' ]))
966 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
968 // Make sure old password is correct.
969 $oldhash = sha1 ( $_POST [ 'oldpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
970 if ( $oldhash != $GLOBALS [ 'hash' ]) { echo '<script language="JavaScript">alert("The old password is not correct.");document.location= \' ?do=changepasswd \' ;</script>' ; exit ; }
972 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
973 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
975 echo '<script language="JavaScript">alert("Your password has been changed.");document.location= \' ?do=tools \' ;</script>' ;
978 else // show the change password form.
980 $PAGE = new pageBuilder
;
981 $PAGE- > assign ( 'token' , getToken ());
982 $PAGE- > renderPage ( 'changepassword' );
987 // -------- User wants to change configuration
988 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=configure' ))
990 if (! empty ( $_POST [ 'title' ]) )
992 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
994 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
995 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
996 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
997 $GLOBALS [ 'timezone' ] = $tz ;
998 $GLOBALS [ 'title' ]= $_POST [ 'title' ];
999 $GLOBALS [ 'redirector' ]= $_POST [ 'redirector' ];
1001 echo '<script language="JavaScript">alert("Configuration was saved.");document.location= \' ?do=tools \' ;</script>' ;
1004 else // Show the configuration form.
1006 $PAGE = new pageBuilder
;
1007 $PAGE- > assign ( 'token' , getToken ());
1008 $PAGE- > assign ( 'title' , htmlspecialchars ( empty ( $GLOBALS [ 'title' ]) ? '' : $GLOBALS [ 'title' ] , ENT_QUOTES
));
1009 $PAGE- > assign ( 'redirector' , htmlspecialchars ( empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ] , ENT_QUOTES
));
1010 list ( $timezone_form , $timezone_js ) = templateTZform ( $GLOBALS [ 'timezone' ]);
1011 $PAGE- > assign ( 'timezone_form' , $timezone_form ); // FIXME: put entire tz form generation in template ?
1012 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1013 $PAGE- > renderPage ( 'configure' );
1018 // -------- User wants to rename a tag or delete it
1019 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=changetag' ))
1021 if ( empty ( $_POST [ 'fromtag' ]))
1023 $PAGE = new pageBuilder
;
1024 $PAGE- > assign ( 'token' , getToken ());
1025 $PAGE- > renderPage ( 'changetag' );
1028 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1031 if (! empty ( $_POST [ 'deletetag' ]) && ! empty ( $_POST [ 'fromtag' ]))
1033 $needle = trim ( $_POST [ 'fromtag' ]);
1034 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1035 foreach ( $linksToAlter as $key => $value )
1037 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1038 unset ( $tags [ array_search ( $needle , $tags )]); // Remove tag.
1039 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1040 $LINKSDB [ $key ]= $value ;
1042 $LINKSDB- > savedb (); // save to disk
1044 echo '<script language="JavaScript">alert("Tag was removed from ' . count ( $linksToAlter ). ' links.");document.location= \' ? \' ;</script>' ;
1049 if (! empty ( $_POST [ 'renametag' ]) && ! empty ( $_POST [ 'fromtag' ]) && ! empty ( $_POST [ 'totag' ]))
1051 $needle = trim ( $_POST [ 'fromtag' ]);
1052 $linksToAlter = $LINKSDB- > filterTags ( $needle , true ); // true for case-sensitive tag search.
1053 foreach ( $linksToAlter as $key => $value )
1055 $tags = explode ( ' ' , trim ( $value [ 'tags' ]));
1056 $tags [ array_search ( $needle , $tags )] = trim ( $_POST [ 'totag' ]); // Remplace tags value.
1057 $value [ 'tags' ]= trim ( implode ( ' ' , $tags ));
1058 $LINKSDB [ $key ]= $value ;
1060 $LINKSDB- > savedb (); // save to disk
1062 echo '<script language="JavaScript">alert("Tag was renamed in ' . count ( $linksToAlter ). ' links.");document.location= \' ?searchtags=' . urlencode ( $_POST [ 'totag' ]). ' \' ;</script>' ;
1067 // -------- User wants to add a link without using the bookmarklet: show form.
1068 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=addlink' ))
1070 $PAGE = new pageBuilder
;
1071 $PAGE- > renderPage ( 'addlink' );
1075 // -------- User clicked the "Save" button when editing a link: Save link to database.
1076 if ( isset ( $_POST [ 'save_edit' ]))
1078 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' ); // Go away !
1079 $tags = trim ( preg_replace ( '/\s\s+/' , ' ' , $_POST [ 'lf_tags' ])); // Remove multiple spaces.
1080 $linkdate = $_POST [ 'lf_linkdate' ];
1081 $link = array ( 'title' => trim ( $_POST [ 'lf_title' ]), 'url' => trim ( $_POST [ 'lf_url' ]), 'description' => trim ( $_POST [ 'lf_description' ]), 'private' =>( isset ( $_POST [ 'lf_private' ]) ? 1 : 0 ),
1082 'linkdate' => $linkdate , 'tags' => str_replace ( ',' , ' ' , $tags ));
1083 if ( $link [ 'title' ]== '' ) $link [ 'title' ]= $link [ 'url' ]; // If title is empty, use the URL as title.
1084 $LINKSDB [ $linkdate ] = $link ;
1085 $LINKSDB- > savedb (); // save to disk
1089 // If we are called from the bookmarklet, we must close the popup:
1090 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1091 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1092 header ( 'Location: ' . $returnurl ); // After saving the link, redirect to the page the user was on.
1096 // -------- User clicked the "Cancel" button when editing a link.
1097 if ( isset ( $_POST [ 'cancel_edit' ]))
1099 // If we are called from the bookmarklet, we must close the popup;
1100 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1101 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1102 header ( 'Location: ' . $returnurl ); // After canceling, redirect to the page the user was on.
1106 // -------- User clicked the "Delete" button when editing a link : Delete link from database.
1107 if ( isset ( $_POST [ 'delete_link' ]))
1109 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1110 // We do not need to ask for confirmation:
1111 // - confirmation is handled by javascript
1112 // - we are protected from XSRF by the token.
1113 $linkdate = $_POST [ 'lf_linkdate' ];
1114 unset ( $LINKSDB [ $linkdate ]);
1115 $LINKSDB- > savedb (); // save to disk
1117 // If we are called from the bookmarklet, we must close the popup:
1118 if ( isset ( $_GET [ 'source' ]) && $_GET [ 'source' ]== 'bookmarklet' ) { echo '<script language="JavaScript">self.close();</script>' ; exit ; }
1119 $returnurl = ( isset ( $_POST [ 'returnurl' ]) ? $_POST [ 'returnurl' ] : '?' );
1120 header ( 'Location: ' . $returnurl ); // After deleting the link, redirect to the page the user was on.
1124 // -------- User clicked the "EDIT" button on a link: Display link edit form.
1125 if ( isset ( $_GET [ 'edit_link' ]))
1127 $link = $LINKSDB [ $_GET [ 'edit_link' ]]; // Read database
1128 if (! $link ) { header ( 'Location: ?' ); exit ; } // Link not found in database.
1129 $PAGE = new pageBuilder
;
1130 $PAGE- > assign ( 'link' , $link );
1131 $PAGE- > assign ( 'link_is_new' , false );
1132 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1133 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1134 $PAGE- > renderPage ( 'editlink' );
1138 // -------- User want to post a new link: Display link edit form.
1139 if ( isset ( $_GET [ 'post' ]))
1143 // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
1144 $i = strpos ( $url , '&utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1145 $i = strpos ( $url , '?utm_source=' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1146 $i = strpos ( $url , '#xtor=RSS-' ); if ( $i !== false ) $url = substr ( $url , 0 , $i );
1148 $link_is_new = false ;
1149 $link = $LINKSDB- > getLinkFromUrl ( $url ); // Check if URL is not already in database (in this case, we will edit the existing link)
1152 $link_is_new = true ; // This is a new link
1153 $linkdate = strval ( date ( 'Ymd_His' ));
1154 $title = ( empty ( $_GET [ 'title' ]) ? '' : $_GET [ 'title' ] ); // Get title if it was provided in URL (by the bookmarklet).
1155 $description = '' ; $tags = '' ; $private = 0 ;
1156 if (( $url != '' ) && parse_url ( $url , PHP_URL_SCHEME
)== '' ) $url = 'http://' . $url ;
1157 // 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.)
1158 if ( empty ( $title ) && parse_url ( $url , PHP_URL_SCHEME
)== 'http' )
1160 list ( $status , $headers , $data ) = getHTTP ( $url , 4 ); // Short timeout to keep the application responsive.
1161 // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
1162 if ( strpos ( $status , '200 OK' )!== false ) $title = html_entity_decode ( html_extract_title ( $data ), ENT_QUOTES
, 'UTF-8' );
1164 if ( $url == '' ) $url = '?' . smallHash ( $linkdate ); // In case of empty URL, this is just a text (with a link that point to itself)
1165 $link = array ( 'linkdate' => $linkdate , 'title' => $title , 'url' => $url , 'description' => $description , 'tags' => $tags , 'private' => 0 );
1168 $PAGE = new pageBuilder
;
1169 $PAGE- > assign ( 'link' , $link );
1170 $PAGE- > assign ( 'link_is_new' , $link_is_new );
1171 $PAGE- > assign ( 'token' , getToken ()); // XSRF protection.
1172 $PAGE- > assign ( 'http_referer' ,( isset ( $_SERVER [ 'HTTP_REFERER' ]) ? $_SERVER [ 'HTTP_REFERER' ] : '' ));
1173 $PAGE- > renderPage ( 'editlink' );
1177 // -------- Export as Netscape Bookmarks HTML file.
1178 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=export' ))
1180 if ( empty ( $_GET [ 'what' ]))
1182 $PAGE = new pageBuilder
;
1183 $PAGE- > renderPage ( 'export' );
1186 $exportWhat = $_GET [ 'what' ];
1187 if (! array_intersect ( array ( 'all' , 'public' , 'private' ), array ( $exportWhat ))) die ( 'What are you trying to export ???' );
1189 header ( 'Content-Type: text/html; charset=utf-8' );
1190 header ( 'Content-disposition: attachment; filename=bookmarks_' . $exportWhat . '_' . strval ( date ( 'Ymd_His' )). '.html' );
1191 $currentdate = date ( 'Y/m/d H:i:s' );
1193 <!DOCTYPE NETSCAPE-Bookmark-file-1>
1194 <!-- This is an automatically generated file.
1195 It will be read and overwritten.
1197 <!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
1198 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
1199 <TITLE>Bookmarks</TITLE>
1202 foreach ( $LINKSDB as $link )
1204 if ( $exportWhat == 'all' ||
1205 ( $exportWhat == 'private' && $link [ 'private' ]!= 0 ) ||
1206 ( $exportWhat == 'public' && $link [ 'private' ]== 0 ))
1208 echo '<DT><A HREF="' . htmlspecialchars ( $link [ 'url' ]). '" ADD_DATE="' . linkdate2timestamp ( $link [ 'linkdate' ]). '" PRIVATE="' . $link [ 'private' ]. '"' ;
1209 if ( $link [ 'tags' ]!= '' ) echo ' TAGS="' . htmlspecialchars ( str_replace ( ' ' , ',' , $link [ 'tags' ])). '"' ;
1210 echo '>' . htmlspecialchars ( $link [ 'title' ]). "</A> \n " ;
1211 if ( $link [ 'description' ]!= '' ) echo '<DD>' . htmlspecialchars ( $link [ 'description' ]). " \n " ;
1217 // -------- User is uploading a file for import
1218 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=upload' ))
1220 // If file is too big, some form field may be missing.
1221 if (! isset ( $_POST [ 'token' ]) || (! isset ( $_FILES )) || ( isset ( $_FILES [ 'filetoupload' ][ 'size' ]) && $_FILES [ 'filetoupload' ][ 'size' ]== 0 ))
1223 $returnurl = ( empty ( $_SERVER [ 'HTTP_REFERER' ]) ? '?' : $_SERVER [ 'HTTP_REFERER' ] );
1224 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>' ;
1227 if (! tokenOk ( $_POST [ 'token' ])) die ( 'Wrong token.' );
1232 // -------- Show upload/import dialog:
1233 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=import' ))
1235 $PAGE = new pageBuilder
;
1236 $PAGE- > assign ( 'token' , getToken ());
1237 $PAGE- > assign ( 'maxfilesize' , getMaxFileSize ());
1238 $PAGE- > renderPage ( 'import' );
1242 // -------- Otherwise, simply display search form and links:
1243 $PAGE = new pageBuilder
;
1244 buildLinkList ( $PAGE ); // Compute list of links to display
1245 $PAGE- > renderPage ( 'linklist' );
1249 // -----------------------------------------------------------------------------------------------
1250 // Process the import file form.
1251 function importFile ()
1254 $filename = $_FILES [ 'filetoupload' ][ 'name' ];
1255 $filesize = $_FILES [ 'filetoupload' ][ 'size' ];
1256 $data = file_get_contents ( $_FILES [ 'filetoupload' ][ 'tmp_name' ]);
1257 $private = ( empty ( $_POST [ 'private' ]) ? 0 : 1 ); // Should the links be imported as private ?
1258 $overwrite = ! empty ( $_POST [ 'overwrite' ]) ; // Should the imported links overwrite existing ones ?
1263 if ( startsWith ( $data , '<!DOCTYPE NETSCAPE-Bookmark-file-1>' )) $type = 'netscape' ; // Netscape bookmark file (aka Firefox).
1265 // Then import the bookmarks.
1266 if ( $type == 'netscape' )
1268 // This is a standard Netscape-style bookmark file.
1269 // This format is supported by all browsers (except IE, of course), also delicious, diigo and others.
1270 foreach ( explode ( '<DT>' , $data ) as $html ) // explode is very fast
1272 $link = array ( 'linkdate' => '' , 'title' => '' , 'url' => '' , 'description' => '' , 'tags' => '' , 'private' => 0 );
1273 $d = explode ( '<DD>' , $html );
1274 if ( startswith ( $d [ 0 ], '<A ' ))
1276 $link [ 'description' ] = ( isset ( $d [ 1 ]) ? html_entity_decode ( trim ( $d [ 1 ]), ENT_QUOTES
, 'UTF-8' ) : '' ); // Get description (optional)
1277 preg_match ( '!<A .*?>(.*?)</A>!i' , $d [ 0 ], $matches ); $link [ 'title' ] = ( isset ( $matches [ 1 ]) ? trim ( $matches [ 1 ]) : '' ); // Get title
1278 $link [ 'title' ] = html_entity_decode ( $link [ 'title' ], ENT_QUOTES
, 'UTF-8' );
1279 preg_match_all ( '! ([A-Z_]+)= \" (.*?)"!i' , $html , $matches , PREG_SET_ORDER
); // Get all other attributes
1281 foreach ( $matches as $m )
1283 $attr = $m [ 1 ]; $value = $m [ 2 ];
1284 if ( $attr == 'HREF' ) $link [ 'url' ]= html_entity_decode ( $value , ENT_QUOTES
, 'UTF-8' );
1285 elseif ( $attr == 'ADD_DATE' ) $raw_add_date = intval ( $value );
1286 elseif ( $attr == 'PRIVATE' ) $link [ 'private' ]=( $value == '0' ? 0 : 1 );
1287 elseif ( $attr == 'TAGS' ) $link [ 'tags' ]= html_entity_decode ( str_replace ( ',' , ' ' , $value ), ENT_QUOTES
, 'UTF-8' );
1289 if ( $link [ 'url' ]!= '' )
1291 if ( $private == 1 ) $link [ 'private' ]= 1 ;
1292 $dblink = $LINKSDB- > getLinkFromUrl ( $link [ 'url' ]); // See if the link is already in database.
1294 { // Link not in database, let's import it...
1295 if ( empty ( $raw_add_date )) $raw_add_date = time (); // In case of shitty bookmark file with no ADD_DATE
1297 // Make sure date/time is not already used by another link.
1298 // (Some bookmark files have several different links with the same ADD_DATE)
1299 // We increment date by 1 second until we find a date which is not used in db.
1300 // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
1301 while (! empty ( $LINKSDB [ date ( 'Ymd_His' , $raw_add_date )])) { $raw_add_date++
; } // Yes, I know it's ugly.
1302 $link [ 'linkdate' ]= date ( 'Ymd_His' , $raw_add_date );
1303 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1306 else // link already present in database.
1309 { // If overwrite is required, we import link data, except date/time.
1310 $link [ 'linkdate' ]= $dblink [ 'linkdate' ];
1311 $LINKSDB [ $link [ 'linkdate' ]] = $link ;
1321 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) was successfully processed: ' . $import_count . ' links imported.");document.location= \' ? \' ;</script>' ;
1325 echo '<script language="JavaScript">alert("File ' . $filename . ' (' . $filesize . ' bytes) has an unknown file format. Nothing was imported.");document.location= \' ? \' ;</script>' ;
1329 // -----------------------------------------------------------------------------------------------
1330 // Template for the list of links (<div id="linklist">)
1331 // This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1332 function buildLinkList ( $PAGE )
1334 global $LINKSDB ; // Get the links database.
1336 // ---- Filter link database according to parameters
1337 $linksToDisplay = array ();
1340 if (! empty ( $_GET [ 'searchterm' ])) // Fulltext search
1342 $linksToDisplay = $LINKSDB- > filterFulltext ( trim ( $_GET [ 'searchterm' ]));
1343 $search_crits = htmlspecialchars ( trim ( $_GET [ 'searchterm' ]));
1344 $search_type = 'fulltext' ;
1346 elseif (! empty ( $_GET [ 'searchtags' ])) // Search by tag
1348 $linksToDisplay = $LINKSDB- > filterTags ( trim ( $_GET [ 'searchtags' ]));
1349 $search_crits = explode ( ' ' , trim ( $_GET [ 'searchtags' ]));
1350 $search_type = 'tags' ;
1352 elseif ( isset ( $_SERVER [ "QUERY_STRING" ]) && preg_match ( '/[a-zA-Z0-9-_@] {6} (&.+?)?/' , $_SERVER [ "QUERY_STRING" ])) // Detect smallHashes in URL
1354 $linksToDisplay = $LINKSDB- > filterSmallHash ( substr ( trim ( $_SERVER [ "QUERY_STRING" ], '/' ), 0 , 6 ));
1355 $search_type = 'permalink' ;
1358 $linksToDisplay = $LINKSDB ; // otherwise, display without filtering.
1361 // ---- Handle paging.
1362 /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess ???
1363 "Warning: array_keys() expects parameter 1 to be array, object given in ... "
1364 If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
1366 $keys = array (); foreach ( $linksToDisplay as $key => $value ) { $keys
[]= $key
; } // Stupid and ugly. Thanks php.
1368 // If there is only a single link, we change on-the-fly the title of the page.
1369 if ( count ( $linksToDisplay )== 1 ) $GLOBALS [ 'pagetitle' ] = $linksToDisplay [ $keys [ 0 ]][ 'title' ]. ' - ' . $GLOBALS [ 'title' ];
1371 // Select articles according to paging.
1372 $pagecount = ceil ( count ( $keys )/ $_SESSION [ 'LINKS_PER_PAGE' ]);
1373 $pagecount = ( $pagecount == 0 ? 1 : $pagecount );
1374 $page =( empty ( $_GET [ 'page' ]) ? 1 : intval ( $_GET [ 'page' ]));
1375 $page = ( $page < 1 ? 1 : $page );
1376 $page = ( $page > $pagecount ? $pagecount : $page );
1377 $i = ( $page-1 )* $_SESSION [ 'LINKS_PER_PAGE' ]; // Start index.
1378 $end = $i +
$_SESSION [ 'LINKS_PER_PAGE' ];
1379 $linkDisp = array (); // Links to display
1380 while ( $i < $end && $i < count ( $keys ))
1382 $link = $linksToDisplay [ $keys [ $i ]];
1383 $link [ 'description' ]= nl2br ( keepMultipleSpaces ( text2clickable ( htmlspecialchars ( $link [ 'description' ]))));
1384 $title = $link [ 'title' ];
1385 $classLi = $i %
2 != 0 ? '' : 'publicLinkHightLight' ;
1386 $link [ 'class' ] = ( $link [ 'private' ]== 0 ? $classLi : 'private' );
1387 $link [ 'localdate' ]= linkdate2locale ( $link [ 'linkdate' ]);
1388 $link [ 'taglist' ]= explode ( ' ' , $link [ 'tags' ]);
1389 $linkDisp [ $keys [ $i ]] = $link ;
1393 // Compute paging navigation
1394 $searchterm = ( empty ( $_GET [ 'searchterm' ]) ? '' : '&searchterm=' . $_GET [ 'searchterm' ] );
1395 $searchtags = ( empty ( $_GET [ 'searchtags' ]) ? '' : '&searchtags=' . $_GET [ 'searchtags' ] );
1397 $previous_page_url = '' ; if ( $i != count ( $keys )) $previous_page_url = '?page=' .( $page +
1 ). $searchterm . $searchtags ;
1398 $next_page_url = '' ; if ( $page > 1 ) $next_page_url = '?page=' .( $page-1 ). $searchterm . $searchtags ;
1400 $token = '' ; if ( isLoggedIn ()) $token = getToken ();
1402 // Fill all template fields.
1403 $PAGE- > assign ( 'previous_page_url' , $previous_page_url );
1404 $PAGE- > assign ( 'next_page_url' , $next_page_url );
1405 $PAGE- > assign ( 'page_current' , $page );
1406 $PAGE- > assign ( 'page_max' , $pagecount );
1407 $PAGE- > assign ( 'result_count' , count ( $linksToDisplay ));
1408 $PAGE- > assign ( 'search_type' , $search_type );
1409 $PAGE- > assign ( 'search_crits' , $search_crits );
1410 $PAGE- > assign ( 'redirector' , empty ( $GLOBALS [ 'redirector' ]) ? '' : $GLOBALS [ 'redirector' ]); // optional redirector URL
1411 $PAGE- > assign ( 'token' , $token );
1412 $PAGE- > assign ( 'links' , $linkDisp );
1416 // Returns the HTML code to display a thumbnail for a link
1417 // with a link to the original URL.
1418 // Understands various services (youtube.com...)
1419 // Input: $url = url for which the thumbnail must be found.
1420 // $href = if provided, this URL will be followed instead of $url
1421 function thumbnail ( $url , $href = false )
1423 if (! $GLOBALS [ 'config' ][ 'ENABLE_THUMBNAILS' ]) return '' ;
1425 if ( $href == false ) $href = $url ;
1427 // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1428 // (eg. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1429 // ^^^^^^^^^^^ ^^^^^^^^^^^
1430 $domain = parse_url ( $url , PHP_URL_HOST
);
1431 if ( $domain == 'youtube.com' || $domain == 'www.youtube.com' )
1433 parse_str ( parse_url ( $url , PHP_URL_QUERY
), $params ); // Extract video ID and get thumbnail
1434 if (! empty ( $params [ 'v' ])) return '<a href="' . htmlspecialchars ( $href ). '"><img src="http://img.youtube.com/vi/' . htmlspecialchars ( $params [ 'v' ]). '/default.jpg" width="120" height="90"></a>' ;
1436 if ( $domain == 'youtu.be' ) // Youtube short links
1438 $path = parse_url ( $url , PHP_URL_PATH
);
1439 return '<a href="' . htmlspecialchars ( $href ). '"><img src="http://img.youtube.com/vi' . htmlspecialchars ( $path ). '/default.jpg" width="120" height="90"></a>' ;
1441 if ( $domain == 'imgur.com' )
1443 $path = parse_url ( $url , PHP_URL_PATH
);
1444 if ( startsWith ( $path , '/a/' )) return '' ; // Thumbnails for albums are not available.
1445 if ( startsWith ( $path , '/r/' )) return '<a href="' . htmlspecialchars ( $href ). '"><img src="http://i.imgur.com/' . htmlspecialchars ( basename ( $path )). 's.jpg" width="90" height="90"></a>' ;
1446 if ( startsWith ( $path , '/gallery/' )) return '<a href="' . htmlspecialchars ( $href ). '"><img src="http://i.imgur.com' . htmlspecialchars ( substr ( $path , 8 )). 's.jpg" width="90" height="90"></a>' ;
1447 if ( substr_count ( $path , '/' )== 1 ) return '<a href="' . htmlspecialchars ( $href ). '"><img src="http://i.imgur.com/' . htmlspecialchars ( substr ( $path , 1 )). 's.jpg" width="90" height="90"></a>' ;
1449 if ( $domain == 'i.imgur.com' )
1451 $pi = pathinfo ( parse_url ( $url , PHP_URL_PATH
));
1452 if (! empty ( $pi [ 'filename' ])) return '<a href="' . htmlspecialchars ( $href ). '"><img src="http://i.imgur.com/' . htmlspecialchars ( $pi [ 'filename' ]). 's.jpg" width="90" height="90"></a>' ;
1454 if ( $domain == 'dailymotion.com' || $domain == 'www.dailymotion.com' )
1456 if ( strpos ( $url , 'dailymotion.com/video/' )!== false )
1458 $thumburl = str_replace ( 'dailymotion.com/video/' , 'dailymotion.com/thumbnail/video/' , $url );
1459 return '<a href="' . htmlspecialchars ( $href ). '"><img src="' . htmlspecialchars ( $thumburl ). '" width="120" style="height:auto;"></a>' ;
1462 if ( endsWith ( $domain , '.imageshack.us' ))
1464 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1465 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1467 $thumburl = substr ( $url , 0 , strlen ( $url )- strlen ( $ext )). 'th.' . $ext ;
1468 return '<a href="' . htmlspecialchars ( $href ). '"><img src="' . htmlspecialchars ( $thumburl ). '" width="120" style="height:auto;"></a>' ;
1472 // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1473 // So we deport the thumbnail generation in order not to slow down page generation
1474 // (and we also cache the thumbnail)
1476 if (! $GLOBALS [ 'config' ][ 'ENABLE_LOCALCACHE' ]) return '' ; // If local cache is disabled, no thumbnails for services which require the use a local cache.
1478 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' )
1479 || $domain == 'vimeo.com'
1480 || $domain == 'ted.com' || endsWith ( $domain , '.ted.com' )
1483 if ( $domain == 'vimeo.com' )
1484 { // Make sure this vimeo url points to a video (/xxx... where xxx is numeric)
1485 $path = parse_url ( $url , PHP_URL_PATH
);
1486 if (! preg_match ( '!/\d+.+?!' , $path )) return '' ; // This is not a single video URL.
1488 if ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
1489 { // Make sure this TED url points to a video (/talks/...)
1490 $path = parse_url ( $url , PHP_URL_PATH
);
1491 if ( "/talks/" !== substr ( $path , 0 , 7 )) return '' ; // This is not a single video URL.
1493 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1494 return '<a href="' . htmlspecialchars ( $href ). '"><img src="?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ). '" width="120" style="height:auto;"></a>' ;
1497 // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1498 // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1499 // But using the extension will do.
1500 $ext = strtolower ( pathinfo ( $url , PATHINFO_EXTENSION
));
1501 if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif' )
1503 $sign = hash_hmac ( 'sha256' , $url , $GLOBALS [ 'salt' ]); // We use the salt to sign data (it's random, secret, and specific to each installation)
1504 return '<a href="' . htmlspecialchars ( $href ). '"><img src="?do=genthumbnail&hmac=' . htmlspecialchars ( $sign ). '&url=' . urlencode ( $url ). '" width="120" style="height:auto;"></a>' ;
1506 return '' ; // No thumbnail.
1510 // -----------------------------------------------------------------------------------------------
1512 // This function should NEVER be called if the file data/config.php exists.
1515 // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1516 if ( endsWith ( $_SERVER [ 'SERVER_NAME' ], '.free.fr' ) && ! is_dir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' )) mkdir ( $_SERVER [ 'DOCUMENT_ROOT' ]. '/sessions' , 0705 );
1518 if (! empty ( $_POST [ 'setlogin' ]) && ! empty ( $_POST [ 'setpassword' ]))
1521 if (! empty ( $_POST [ 'continent' ]) && ! empty ( $_POST [ 'city' ]))
1522 if ( isTZvalid ( $_POST [ 'continent' ], $_POST [ 'city' ]))
1523 $tz = $_POST [ 'continent' ]. '/' . $_POST [ 'city' ];
1524 $GLOBALS [ 'timezone' ] = $tz ;
1525 // Everything is ok, let's create config file.
1526 $GLOBALS [ 'login' ] = $_POST [ 'setlogin' ];
1527 $GLOBALS [ 'salt' ] = sha1 ( uniqid ( '' , true ). '_' . mt_rand ()); // Salt renders rainbow-tables attacks useless.
1528 $GLOBALS [ 'hash' ] = sha1 ( $_POST [ 'setpassword' ]. $GLOBALS [ 'login' ]. $GLOBALS [ 'salt' ]);
1529 $GLOBALS [ 'title' ] = ( empty ( $_POST [ 'title' ]) ? 'Shared links on ' . htmlspecialchars ( indexUrl ()) : $_POST [ 'title' ] );
1531 echo '<script language="JavaScript">alert("Shaarli is now configured. Please enter your login/password and start shaaring your links !");document.location= \' ?do=login \' ;</script>' ;
1535 // Display config form:
1536 list ( $timezone_form , $timezone_js ) = templateTZform ();
1537 $timezone_html = '' ; if ( $timezone_form != '' ) $timezone_html = '<tr><td valign="top"><b>Timezone:</b></td><td>' . $timezone_form . '</td></tr>' ;
1539 $PAGE = new pageBuilder
;
1540 $PAGE- > assign ( 'timezone_html' , $timezone_html );
1541 $PAGE- > assign ( 'timezone_js' , $timezone_js );
1542 $PAGE- > renderPage ( 'install' );
1546 // Generates the timezone selection form and javascript.
1547 // Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
1548 // Output: array(html,js)
1549 // Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
1550 // Returns array('','') if server does not support timezones list. (eg. php 5.1 on free.fr)
1551 function templateTZform ( $ptz = false )
1553 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
1555 // Try to split the provided timezone.
1556 if ( $ptz == false ) { $l
= timezone_identifiers_list (); $ptz
= $l
[ 0 ]; }
1557 $spos = strpos ( $ptz , '/' ); $pcontinent = substr ( $ptz , 0 , $spos ); $pcity = substr ( $ptz , $spos +
1 );
1559 // Display config form:
1560 $timezone_form = '' ;
1562 // The list is in the forme "Europe/Paris", "America/Argentina/Buenos_Aires"...
1563 // We split the list in continents/cities.
1564 $continents = array ();
1566 foreach ( timezone_identifiers_list () as $tz )
1568 if ( $tz == 'UTC' ) $tz = 'UTC/UTC' ;
1569 $spos = strpos ( $tz , '/' );
1572 $continent = substr ( $tz , 0 , $spos ); $city = substr ( $tz , $spos +
1 );
1573 $continents [ $continent ]= 1 ;
1574 if (! isset ( $cities [ $continent ])) $cities [ $continent ]= array ();
1575 $cities [ $continent ].= '<option value="' . $city . '"' .( $pcity == $city ? 'selected' : '' ). '>' . $city . '</option>' ;
1578 $continents_html = '' ;
1579 $continents = array_keys ( $continents );
1580 foreach ( $continents as $continent )
1581 $continents_html .= '<option value="' . $continent . '"' .( $pcontinent == $continent ? 'selected' : '' ). '>' . $continent . '</option>' ;
1582 $cities_html = $cities [ $pcontinent ];
1583 $timezone_form = "Continent: <select name= \" continent \" id= \" continent \" onChange= \" onChangecontinent(); \" > ${continents_html} </select><br /><br />" ;
1584 $timezone_form .= "City: <select name= \" city \" id= \" city \" > ${cities[$pcontinent]} </select><br /><br />" ;
1585 $timezone_js = "<script language= \" JavaScript \" >" ;
1586 $timezone_js .= "function onChangecontinent() {document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];} " ;
1587 $timezone_js .= "var citiescontinent = " . json_encode ( $cities ). ";" ;
1588 $timezone_js .= "</script>" ;
1589 return array ( $timezone_form , $timezone_js );
1591 return array ( '' , '' );
1594 // Tells if a timezone is valid or not.
1595 // If not valid, returns false.
1596 // If system does not support timezone list, returns false.
1597 function isTZvalid ( $continent , $city )
1599 $tz = $continent . '/' . $city ;
1600 if ( function_exists ( 'timezone_identifiers_list' )) // because of old php version (5.1) which can be found on free.fr
1602 if ( in_array ( $tz , timezone_identifiers_list ())) // it's a valid timezone ?
1609 // Webservices (for use with jQuery/jQueryUI)
1610 // eg. index.php?ws=tags&term=minecr
1611 function processWS ()
1613 if ( empty ( $_GET [ 'ws' ]) || empty ( $_GET [ 'term' ])) return ;
1614 $term = $_GET [ 'term' ];
1616 header ( 'Content-Type: application/json; charset=utf-8' );
1618 // Search in tags (case insentitive, cumulative search)
1619 if ( $_GET [ 'ws' ]== 'tags' )
1621 $tags = explode ( ' ' , str_replace ( ',' , ' ' , $term )); $last = array_pop ( $tags ); // Get the last term ("a b c d" ==> "a b c", "d")
1622 $addtags = '' ; if ( $tags ) $addtags = implode ( ' ' , $tags ). ' ' ; // We will pre-pend previous tags
1624 /* To speed up things, we store list of tags in session */
1625 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
1626 foreach ( $_SESSION [ 'tags' ] as $key => $value )
1628 if ( startsWith ( $key , $last , $case = false ) && ! in_array ( $key , $tags )) $suggested [ $addtags . $key . ' ' ]= 0 ;
1630 echo json_encode ( array_keys ( $suggested ));
1634 // Search a single tag (case sentitive, single tag search)
1635 if ( $_GET [ 'ws' ]== 'singletag' )
1637 /* To speed up things, we store list of tags in session */
1638 if ( empty ( $_SESSION [ 'tags' ])) $_SESSION [ 'tags' ] = $LINKSDB- > allTags ();
1639 foreach ( $_SESSION [ 'tags' ] as $key => $value )
1641 if ( startsWith ( $key , $term , $case = true )) $suggested [ $key ]= 0 ;
1643 echo json_encode ( array_keys ( $suggested ));
1648 // Re-write configuration file according to globals.
1649 // Requires some $GLOBALS to be set (login,hash,salt,title).
1650 // If the config file cannot be saved, an error message is dislayed and the user is redirected to "Tools" menu.
1651 // (otherwise, the function simply returns.)
1652 function writeConfig ()
1654 if ( is_file ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]) && ! isLoggedIn ()) die ( 'You are not authorized to alter config.' ); // Only logged in user can alter config.
1655 if ( empty ( $GLOBALS [ 'redirector' ])) $GLOBALS [ 'redirector' ]= '' ;
1656 $config = '<?php $GLOBALS [ \' login \' ]=' . var_export ( $GLOBALS [ 'login' ], true ). '; $GLOBALS [ \' hash \' ]=' . var_export ( $GLOBALS [ 'hash' ], true ). '; $GLOBALS [ \' salt \' ]=' . var_export ( $GLOBALS [ 'salt' ], true ). '; ' ;
1657 $config .= ' $GLOBALS [ \' timezone \' ]=' . var_export ( $GLOBALS [ 'timezone' ], true ). '; date_default_timezone_set(' . var_export ( $GLOBALS [ 'timezone' ], true ). '); $GLOBALS [ \' title \' ]=' . var_export ( $GLOBALS [ 'title' ], true ). ';' ;
1658 $config .= ' $GLOBALS [ \' redirector \' ]=' . var_export ( $GLOBALS [ 'redirector' ], true ). '; ' ;
1660 if (! file_put_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ], $config ) || strcmp ( file_get_contents ( $GLOBALS [ 'config' ][ 'CONFIG_FILE' ]), $config )!= 0 )
1662 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>' ;
1667 /* Because some f*cking services like Flickr require an extra HTTP request to get the thumbnail URL,
1668 I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
1669 The following function takes the URL a link (eg. a flickr page) and return the proper thumbnail.
1670 This function is called by passing the url:
1671 http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
1672 [URL] is the URL of the link (eg. a flickr page)
1673 [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
1674 The function below will fetch the image from the webservice and store it in the cache.
1676 function genThumbnail ()
1678 // Make sure the parameters in the URL were generated by us.
1679 $sign = hash_hmac ( 'sha256' , $_GET [ 'url' ], $GLOBALS [ 'salt' ]);
1680 if ( $sign != $_GET [ 'hmac' ]) die ( 'Naughty boy !' );
1682 // Let's see if we don't already have the image for this URL in the cache.
1683 $thumbname = hash ( 'sha1' , $_GET [ 'url' ]). '.jpg' ;
1684 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ))
1685 { // We have the thumbnail, just serve it:
1686 header ( 'Content-Type: image/jpeg' );
1687 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname );
1690 // We may also serve a blank image (if service did not respond)
1691 $blankname = hash ( 'sha1' , $_GET [ 'url' ]). '.gif' ;
1692 if ( is_file ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname ))
1694 header ( 'Content-Type: image/gif' );
1695 echo file_get_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname );
1699 // Otherwise, generate the thumbnail.
1700 $url = $_GET [ 'url' ];
1701 $domain = parse_url ( $url , PHP_URL_HOST
);
1703 if ( $domain == 'flickr.com' || endsWith ( $domain , '.flickr.com' ))
1705 // WTF ? I need a flickr API key to get a fucking thumbnail ? No way.
1706 // I'll extract the thumbnail URL myself. First, we have to get the flickr HTML page.
1707 // All images in Flickr are in the form:
1708 // http://farm[farm].static.flickr.com/[server]/[id]_[secret]_[size].jpg
1709 // Example: http://farm7.static.flickr.com/6205/6088513739_fc158467fe_z.jpg
1710 // We want the 240x120 format, which is _m.jpg.
1711 // We search for the first image in the page which does not have the _s size,
1712 // when use the _m to get the thumbnail.
1714 // Is this a link to an image, or to a flickr page ?
1716 if ( endswith ( parse_url ( $url , PHP_URL_PATH
), '.jpg' ))
1717 { // This is a direct link to an image. eg. http://farm1.static.flickr.com/5/5921913_ac83ed27bd_o.jpg
1718 preg_match ( '!(http://farm\d+.static.flickr.com/\d+/\d+_\w+_)\w.jpg!' , $url , $matches );
1719 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ]. 'm.jpg' ;
1721 else // this is a flickr page (html)
1723 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 20 ); // Get the flickr html page.
1724 if ( strpos ( $httpstatus , '200 OK' )!== false )
1726 preg_match ( '!(http://farm\d+.static.flickr.com/\d+/\d+_\w+_)[^s].jpg!' , $data , $matches );
1727 if (! empty ( $matches [ 1 ])) $imageurl = $matches [ 1 ]. 'm.jpg' ;
1731 { // Let's download the image.
1732 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 ); // Image is 240x120, so 10 seconds to download should be enough.
1733 if ( strpos ( $httpstatus , '200 OK' )!== false )
1735 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
1736 header ( 'Content-Type: image/jpeg' );
1743 elseif ( $domain == 'vimeo.com' )
1745 // This is more complex: we have to perform a HTTP request, then parse the result.
1746 // Maybe we should deport this to javascript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
1747 $vid = substr ( parse_url ( $url , PHP_URL_PATH
), 1 );
1748 list ( $httpstatus , $headers , $data ) = getHTTP ( 'http://vimeo.com/api/v2/video/' . htmlspecialchars ( $vid ). '.php' , 5 );
1749 if ( strpos ( $httpstatus , '200 OK' )!== false )
1751 $t = unserialize ( $data );
1752 $imageurl = $t [ 0 ][ 'thumbnail_medium' ];
1753 // Then we download the image and serve it to our client.
1754 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 10 );
1755 if ( strpos ( $httpstatus , '200 OK' )!== false )
1757 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname , $data ); // Save image to cache.
1758 header ( 'Content-Type: image/jpeg' );
1765 elseif ( $domain == 'ted.com' || endsWith ( $domain , '.ted.com' ))
1767 // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
1768 // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
1769 // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
1770 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 5 );
1771 if ( strpos ( $httpstatus , '200 OK' )!== false )
1773 // Extract the link to the thumbnail
1774 preg_match ( '!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)[^s]!' , $data , $matches );
1775 if (! empty ( $matches [ 1 ]))
1776 { // Let's download the image.
1777 $imageurl = $matches [ 1 ];
1778 list ( $httpstatus , $headers , $data ) = getHTTP ( $imageurl , 20 ); // No control on image size, so wait long enough.
1779 if ( strpos ( $httpstatus , '200 OK' )!== false )
1781 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
1782 file_put_contents ( $filepath , $data ); // Save image to cache.
1783 if ( resizeImage ( $filepath ))
1785 header ( 'Content-Type: image/jpeg' );
1786 echo file_get_contents ( $filepath );
1796 // For all other domains, we try to download the image and make a thumbnail.
1797 list ( $httpstatus , $headers , $data ) = getHTTP ( $url , 30 ); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
1798 if ( strpos ( $httpstatus , '200 OK' )!== false )
1800 $filepath = $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $thumbname ;
1801 file_put_contents ( $filepath , $data ); // Save image to cache.
1802 if ( resizeImage ( $filepath ))
1804 header ( 'Content-Type: image/jpeg' );
1805 echo file_get_contents ( $filepath );
1812 // Otherwise, return an empty image (8x8 transparent gif)
1813 $blankgif = base64_decode ( 'R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7' );
1814 file_put_contents ( $GLOBALS [ 'config' ][ 'CACHEDIR' ]. '/' . $blankname , $blankgif ); // Also put something in cache so that this URL is not requested twice.
1815 header ( 'Content-Type: image/gif' );
1819 // Make a thumbnail of the image (to width: 120 pixels)
1820 // Returns true if success, false otherwise.
1821 function resizeImage ( $filepath )
1823 if (! function_exists ( 'imagecreatefromjpeg' )) return false ; // GD not present: no thumbnail possible.
1825 // Trick: some stupid people rename GIF as JPEG... or else.
1826 // So we really try to open each image type whatever the extension is.
1827 $header = file_get_contents ( $filepath , false , NULL , 0 , 256 ); // Read first 256 bytes and try to sniff file type.
1829 $i = strpos ( $header , 'GIF8' ); if (( $i !== false ) && ( $i == 0 )) $im = imagecreatefromgif ( $filepath ); // Well this is crude, but it should be enough.
1830 $i = strpos ( $header , 'PNG' ); if (( $i !== false ) && ( $i == 1 )) $im = imagecreatefrompng ( $filepath );
1831 $i = strpos ( $header , 'JFIF' ); if ( $i !== false ) $im = imagecreatefromjpeg ( $filepath );
1832 if (! $im ) return false ; // Unable to open image (corrupted or not an image)
1835 $ystart = 0 ; $yheight = $h ;
1836 if ( $h > $w ) { $ystart
= ( $h
/ 2 )-( $w
/ 2 ); $yheight
= $w
/ 2 ; }
1837 $nw = 120 ; // Desired width
1838 $nh = min ( floor (( $h * $nw )/ $w ), 120 ); // Compute new width/height, but maximum 120 pixels height.
1840 $im2 = imagecreatetruecolor ( $nw , $nh );
1841 imagecopyresampled ( $im2 , $im , 0 , 0 , 0 , $ystart , $nw , $nh , $w , $yheight );
1842 imageinterlace ( $im2 , true ); // For progressive JPEG.
1843 $tempname = $filepath . '_TEMP.jpg' ;
1844 imagejpeg ( $im2 , $tempname , 90 );
1847 rename ( $tempname , $filepath ); // Overwrite original picture with thumbnail.
1851 // Invalidate caches when the database is changed or the user logs out.
1852 // (eg. tags cache).
1853 function invalidateCaches ()
1855 unset ( $_SESSION [ 'tags' ]);
1858 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=genthumbnail' )) { genThumbnail (); exit ; } // Thumbnail generation/cache does not need the link database.
1859 $LINKSDB = new linkdb ( isLoggedIn () || $GLOBALS [ 'config' ][ 'OPEN_SHAARLI' ]); // Read links from database (and filter private links if used it not logged in).
1860 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'ws=' )) { processWS (); exit ; } // Webservices (for jQuery/jQueryUI)
1861 if (! isset ( $_SESSION [ 'LINKS_PER_PAGE' ])) $_SESSION [ 'LINKS_PER_PAGE' ]= $GLOBALS [ 'config' ][ 'LINKS_PER_PAGE' ];
1862 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=rss' )) { showRSS (); exit ; }
1863 if ( isset ( $_SERVER [ "QUERY_STRING" ]) && startswith ( $_SERVER [ "QUERY_STRING" ], 'do=atom' )) { showATOM (); exit ; }