'); // Suffix to encapsulate data in php code. $STARTTIME = microtime(true); // Measure page execution time. checkphpversion(); error_reporting(E_ALL^E_WARNING); // See all error except warnings. //error_reporting(-1); // See all errors (for debugging only) ob_start(); // In case stupid admin has left magic_quotes enabled in php.ini: if (get_magic_quotes_gpc()) { function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; } $_POST = array_map('stripslashes_deep', $_POST); $_GET = array_map('stripslashes_deep', $_GET); $_COOKIE = array_map('stripslashes_deep', $_COOKIE); } // Prevent caching: (yes, it's ugly) header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); define('shaarli_version','0.0.24 beta'); if (!is_dir(DATADIR)) { mkdir(DATADIR,0705); chmod(DATADIR,0705); } if (!is_dir(CACHEDIR)) { mkdir(CACHEDIR,0705); chmod(CACHEDIR,0705); } if (!is_file(DATADIR.'/.htaccess')) { file_put_contents(DATADIR.'/.htaccess',"Allow from none\nDeny from all\n"); } // Protect data files. if (!is_file(CACHEDIR.'/.htaccess')) { file_put_contents(CACHEDIR.'/.htaccess',"Allow from none\nDeny from all\n"); } // Protect data files. if (!is_file(CONFIG_FILE)) install(); require CONFIG_FILE; // Read login/password hash into $GLOBALS. // Small protection against dodgy config files: if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.htmlspecialchars(serverUrl().$_SERVER['SCRIPT_NAME']); if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get(); autoLocale(); // Sniff browser language and set date format accordingly. header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling. $LINKSDB=false; // Check php version function checkphpversion() { if (version_compare(PHP_VERSION, '5.1.0') < 0) { header('Content-Type: text/plain; charset=utf-8'); echo 'Your server supports php '.PHP_VERSION.'. Shaarli requires at last php 5.1.0, and thus cannot run. Sorry.'; exit; } } // Checks if an update is available for Shaarli. // (at most once a day, and only for registered user.) // Output: '' = no new version. // other= the available version. function checkUpdate() { if (!isLoggedIn()) return ''; // Do not check versions for visitors. // Get latest version number at most once a day. if (!is_file(UPDATECHECK_FILENAME) || (filemtime(UPDATECHECK_FILENAME) yZH23w Small hashes: - are unique (well, as unique as crc32, at last) - are always 6 characters long. - only use the following characters: a-z A-Z 0-9 - _ @ - are NOT cryptographically secure (they CAN be forged) In Shaarli, they are used as a tinyurl-like link to individual entries. */ function smallHash($text) { $t = rtrim(base64_encode(hash('crc32',$text,true)),'='); $t = str_replace('+','-',$t); // Get rid of characters which need encoding in URLs. $t = str_replace('/','_',$t); $t = str_replace('=','@',$t); return $t; } // Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722 function text2clickable($url) { return preg_replace('!((?:https?|ftp)://\S+[[:alnum:]]/?)!si','$1 ',$url); } // ------------------------------------------------------------------------------------------ // Sniff browser language to display dates in the right format automatically. // (Note that is may not work on your server if the corresponding local is not installed.) function autoLocale() { $loc='en_US'; // Default if browser does not send HTTP_ACCEPT_LANGUAGE if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // eg. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3" { // (It's a bit crude, but it works very well. Prefered language is always presented first.) if (preg_match('/([a-z]{2}(-[a-z]{2})?)/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) $loc=$matches[1]; } setlocale(LC_TIME,$loc); // LC_TIME = Set local for date/time format only. } // ------------------------------------------------------------------------------------------ // Session management define('INACTIVITY_TIMEOUT',3600); // (in seconds). If the user does not access any page within this time, his/her session is considered expired. ini_set('session.use_cookies', 1); // Use cookies to store session. ini_set('session.use_only_cookies', 1); // Force cookies for session (phpsessionID forbidden in URL) ini_set('session.use_trans_sid', false); // Prevent php to use sessionID in URL if cookies are disabled. session_name('shaarli'); session_start(); // Returns the IP address of the client (Used to prevent session cookie hijacking.) function allIPs() { $ip = $_SERVER["REMOTE_ADDR"]; // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy. if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; } if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; } return $ip; } // Check that user/password is correct. function check_auth($login,$password) { $hash = sha1($password.$login.$GLOBALS['salt']); if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash']) { // Login/password is correct. $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // generate unique random number (different than phpsessionid) $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked. $_SESSION['username']=$login; $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration. logm('Login successful'); return True; } logm('Login failed for user '.$login); return False; } // Returns true if the user is logged in. function isLoggedIn() { if (OPEN_SHAARLI) return true; // If session does not exist on server side, or IP address has changed, or session has expired, logout. if (empty($_SESSION['uid']) || $_SESSION['ip']!=allIPs() || time()>=$_SESSION['expires_on']) { logout(); return false; } if (!empty($_SESSION['longlastingsession'])) $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked. else $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date. return true; } // Force logout. function logout() { if (isset($_SESSION)) { unset($_SESSION['uid']); unset($_SESSION['ip']); unset($_SESSION['username']);} } // ------------------------------------------------------------------------------------------ // Brute force protection system // Several consecutive failed logins will ban the IP address for 30 minutes. if (!is_file(IPBANS_FILENAME)) file_put_contents(IPBANS_FILENAME, "array(),'BANS'=>array()),true).";\n?>"); include IPBANS_FILENAME; // Signal a failed login. Will ban the IP if too many failures: function ban_loginFailed() { $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS']; if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0; $gb['FAILURES'][$ip]++; if ($gb['FAILURES'][$ip]>(BAN_AFTER-1)) { $gb['BANS'][$ip]=time()+BAN_DURATION; logm('IP address banned from login'); } $GLOBALS['IPBANS'] = $gb; file_put_contents(IPBANS_FILENAME, ""); } // Signals a successful login. Resets failed login counter. function ban_loginOk() { $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS']; unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]); $GLOBALS['IPBANS'] = $gb; file_put_contents(IPBANS_FILENAME, ""); } // Checks if the user CAN login. If 'true', the user can try to login. function ban_canLogin() { $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS']; if (isset($gb['BANS'][$ip])) { // User is banned. Check if the ban has expired: if ($gb['BANS'][$ip]<=time()) { // Ban expired, user can try to login again. logm('Ban lifted.'); unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]); file_put_contents(IPBANS_FILENAME, ""); return true; // Ban has expired, user can login. } return false; // User is banned. } return true; // User is not banned. } // ------------------------------------------------------------------------------------------ // Process login form: Check if login/password is correct. if (isset($_POST['login'])) { if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.'); if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password']))) { // Login/password is ok. ban_loginOk(); // If user wants to keep the session cookie even after the browser closes: if (!empty($_POST['longlastingsession'])) { $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year) $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side. session_set_cookie_params($_SESSION['longlastingsession']); // Set session cookie expiration on client side session_regenerate_id(true); // Send cookie with new expiration date to browser. } else // Standard session expiration (=when browser closes) { session_set_cookie_params(0); // 0 means "When browser closes" session_regenerate_id(true); } // Optional redirect after login: if (isset($_GET['post'])) { header('Location: ?post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); exit; } if (isset($_POST['returnurl'])) { if (endsWith($_POST['returnurl'],'?do=login')) { header('Location: ?'); exit; } // Prevent loops over login screen. header('Location: '.$_POST['returnurl']); exit; } header('Location: ?'); exit; } else { ban_loginFailed(); echo ''; // Redirect to login screen. exit; } } // ------------------------------------------------------------------------------------------ // Misc utility functions: // Returns the server URL (including port and http/https), without path. // eg. "http://myserver.com:8080" // You can append $_SERVER['SCRIPT_NAME'] to get the current script URL. function serverUrl() { $serverport = ($_SERVER["SERVER_PORT"]!='80' ? ':'.$_SERVER["SERVER_PORT"] : ''); return 'http'.(!empty($_SERVER['HTTPS'])?'s':'').'://'.$_SERVER["SERVER_NAME"].$serverport; } // Convert post_max_size/upload_max_filesize (eg.'16M') parameters to bytes. function return_bytes($val) { $val = trim($val); $last=strtolower($val[strlen($val)-1]); switch($last) { case 'g': $val *= 1024; case 'm': $val *= 1024; case 'k': $val *= 1024; } return $val; } // Try to determine max file size for uploads (POST). // Returns an integer (in bytes) function getMaxFileSize() { $size1 = return_bytes(ini_get('post_max_size')); $size2 = return_bytes(ini_get('upload_max_filesize')); // Return the smaller of two: $maxsize = min($size1,$size2); // FIXME: Then convert back to readable notations ? (eg. 2M instead of 2000000) return $maxsize; } // Tells if a string start with a substring or not. function startsWith($haystack,$needle,$case=true) { if($case){return (strcmp(substr($haystack, 0, strlen($needle)),$needle)===0);} return (strcasecmp(substr($haystack, 0, strlen($needle)),$needle)===0); } // Tells if a string ends with a substring or not. function endsWith($haystack,$needle,$case=true) { if($case){return (strcmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0);} return (strcasecmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0); } /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch) (used to build the ADD_DATE attribute in Netscape-bookmarks file) PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */ function linkdate2timestamp($linkdate) { $Y=$M=$D=$h=$m=$s=0; $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s); return mktime($h,$m,$s,$M,$D,$Y); } /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date. (used to build the pubDate attribute in RSS feed.) */ function linkdate2rfc822($linkdate) { return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format. } /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date. (used to build the updated tags in ATOM feed.) */ function linkdate2iso8601($linkdate) { return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format. } /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a localized date format. (used to display link date on screen) The date format is automatically chosen according to locale/languages sniffed from browser headers (see autoLocale()). */ function linkdate2locale($linkdate) { return utf8_encode(strftime('%c',linkdate2timestamp($linkdate))); // %c is for automatic date format according to locale. // Note that if you use a local which is not installed on your webserver, // the date will not be displayed in the chosen locale, but probably in US notation. } // Parse HTTP response headers and return an associative array. function http_parse_headers( $headers ) { $res=array(); foreach($headers as $header) { $i = strpos($header,': '); if ($i) { $key=substr($header,0,$i); $value=substr($header,$i+2,strlen($header)-$i-2); $res[$key]=$value; } } return $res; } /* GET an URL. Input: $url : url to get (http://...) $timeout : Network timeout (will wait this many seconds for an anwser before giving up). Output: An array. [0] = HTTP status message (eg. "HTTP/1.1 200 OK") or error message [1] = associative array containing HTTP response headers (eg. echo getHTTP($url)[1]['Content-Type']) [2] = data Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/'); if (strpos($httpstatus,'200 OK')) echo 'Data type: '.htmlspecialchars($headers['Content-Type']); else echo 'There was an error: '.htmlspecialchars($httpstatus) */ function getHTTP($url,$timeout=30) { try { $options = array('http'=>array('method'=>'GET','timeout' => $timeout)); // Force network timeout $context = stream_context_create($options); $data=file_get_contents($url,false,$context,-1, 4000000); // We download at most 4 Mb from source. if (!$data) { $lasterror=error_get_last(); return array($lasterror['message'],array(),''); } $httpStatus=$http_response_header[0]; // eg. "HTTP/1.1 200 OK" $responseHeaders=http_parse_headers($http_response_header); return array($httpStatus,$responseHeaders,$data); } catch (Exception $e) // getHTTP *can* fail silentely (we don't care if the title cannot be fetched) { return array($e->getMessage(),'',''); } } // Extract title from an HTML document. // (Returns an empty string if not found.) function html_extract_title($html) { return preg_match('!(.*?)!i', $html, $matches) ? $matches[1] : ''; } // ------------------------------------------------------------------------------------------ // Token management for XSRF protection // Token should be used in any form which acts on data (create,update,delete,import...). if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session. // Returns a token. function getToken() { $rnd = sha1(uniqid('',true).'_'.mt_rand()); // We generate a random string. $_SESSION['tokens'][$rnd]=1; // Store it on the server side. return $rnd; } // Tells if a token is ok. Using this function will destroy the token. // true=token is ok. function tokenOk($token) { if (isset($_SESSION['tokens'][$token])) { unset($_SESSION['tokens'][$token]); // Token is used: destroy it. return true; // Token is ok. } return false; // Wrong token, or already used. } // ------------------------------------------------------------------------------------------ /* Data storage for links. This object behaves like an associative array. Example: $mylinks = new linkdb(); echo $mylinks['20110826_161819']['title']; foreach($mylinks as $link) echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description']; We implement 3 interfaces: - ArrayAccess so that this object behaves like an associative array. - Iterator so that this object can be used in foreach() loops. - Countable interface so that we can do a count() on this object. */ class linkdb implements Iterator, Countable, ArrayAccess { private $links; // List of links (associative array. Key=linkdate (eg. "20110823_124546"), value= associative array (keys:title,description...) private $urls; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate) private $keys; // List of linkdate keys (for the Iterator interface implementation) private $position; // Position in the $this->keys array. (for the Iterator interface implementation.) private $loggedin; // Is the used logged in ? (used to filter private links) // Constructor: function __construct($isLoggedIn) // Input : $isLoggedIn : is the used logged in ? { $this->loggedin = $isLoggedIn; $this->checkdb(); // Make sure data file exists. $this->readdb(); // Then read it. } // ---- Countable interface implementation public function count() { return count($this->links); } // ---- ArrayAccess interface implementation public function offsetSet($offset, $value) { if (!$this->loggedin) die('You are not authorized to add a link.'); if (empty($value['linkdate']) || empty($value['url'])) die('Internal Error: A link should always have a linkdate and url.'); if (empty($offset)) die('You must specify a key.'); $this->links[$offset] = $value; $this->urls[$value['url']]=$offset; } public function offsetExists($offset) { return array_key_exists($offset,$this->links); } public function offsetUnset($offset) { if (!$this->loggedin) die('You are not authorized to delete a link.'); $url = $this->links[$offset]['url']; unset($this->urls[$url]); unset($this->links[$offset]); } public function offsetGet($offset) { return isset($this->links[$offset]) ? $this->links[$offset] : null; } // ---- Iterator interface implementation function rewind() { $this->keys=array_keys($this->links); rsort($this->keys); $this->position=0; } // Start over for iteration, ordered by date (latest first). function key() { return $this->keys[$this->position]; } // current key function current() { return $this->links[$this->keys[$this->position]]; } // current value function next() { ++$this->position; } // go to next item function valid() { return isset($this->keys[$this->position]); } // Check if current position is valid. // ---- Misc methods private function checkdb() // Check if db directory and file exists. { if (!file_exists(DATASTORE)) // Create a dummy database for example. { $this->links = array(); $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'); $this->links[$link['linkdate']] = $link; $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'); $this->links[$link['linkdate']] = $link; file_put_contents(DATASTORE, PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX); // Write database to disk } } // Read database from disk to memory private function readdb() { // Read data $this->links=(file_exists(DATASTORE) ? unserialize(gzinflate(base64_decode(substr(file_get_contents(DATASTORE),strlen(PHPPREFIX),-strlen(PHPSUFFIX))))) : array() ); // Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439 // If user is not logged in, filter private links. if (!$this->loggedin) { $toremove=array(); foreach($this->links as $link) { if ($link['private']!=0) $toremove[]=$link['linkdate']; } foreach($toremove as $linkdate) { unset($this->links[$linkdate]); } } // Keep the list of the mapping URLs-->linkdate up-to-date. $this->urls=array(); foreach($this->links as $link) { $this->urls[$link['url']]=$link['linkdate']; } } // Save database from memory to disk. public function savedb() { if (!$this->loggedin) die('You are not authorized to change the database.'); file_put_contents(DATASTORE, PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX); } // Returns the link for a given URL (if it exists). false it does not exist. public function getLinkFromUrl($url) { if (isset($this->urls[$url])) return $this->links[$this->urls[$url]]; return false; } // Case insentitive search among links (in url, title and description). Returns filtered list of links. // eg. print_r($mydb->filterFulltext('hollandais')); public function filterFulltext($searchterms) { // FIXME: explode(' ',$searchterms) and perform a AND search. // FIXME: accept double-quotes to search for a string "as is" ? $filtered=array(); $s = strtolower($searchterms); foreach($this->links as $l) { $found=strpos(strtolower($l['title']),$s) || strpos(strtolower($l['description']),$s) || strpos(strtolower($l['url']),$s) || strpos(strtolower($l['tags']),$s); if ($found) $filtered[$l['linkdate']] = $l; } krsort($filtered); return $filtered; } // Filter by tag. // You can specify one or more tags (tags can be separated by space or comma). // eg. print_r($mydb->filterTags('linux programming')); public function filterTags($tags,$casesensitive=false) { $t = str_replace(',',' ',($casesensitive?$tags:strtolower($tags))); $searchtags=explode(' ',$t); $filtered=array(); foreach($this->links as $l) { $linktags = explode(' ',($casesensitive?$l['tags']:strtolower($l['tags']))); if (count(array_intersect($linktags,$searchtags)) == count($searchtags)) $filtered[$l['linkdate']] = $l; } krsort($filtered); return $filtered; } // Filter by smallHash. // Only 1 article is returned. public function filterSmallHash($smallHash) { $filtered=array(); foreach($this->links as $l) { if ($smallHash==smallHash($l['linkdate'])) // Yes, this is ugly and slow { $filtered[$l['linkdate']] = $l; return $filtered; } } return $filtered; } // Returns the list of all tags // Output: associative array key=tags, value=0 public function allTags() { $tags=array(); foreach($this->links as $link) foreach(explode(' ',$link['tags']) as $tag) if (!empty($tag)) $tags[$tag]=(empty($tags[$tag]) ? 1 : $tags[$tag]+1); arsort($tags); // Sort tags by usage (most used tag first) return $tags; } } // ------------------------------------------------------------------------------------------ // Ouput the last 50 links in RSS 2.0 format. function showRSS() { global $LINKSDB; // Optionnaly filter the results: $linksToDisplay=array(); if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']); elseif (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags'])); else $linksToDisplay = $LINKSDB; header('Content-Type: application/rss+xml; charset=utf-8'); $pageaddr=htmlspecialchars(serverUrl().$_SERVER["SCRIPT_NAME"]); echo ''; echo ''.htmlspecialchars($GLOBALS['title']).''.$pageaddr.''; echo 'Shared links'.$pageaddr.''."\n\n"; $i=0; $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys(). while ($i<50 && $i'.htmlspecialchars($link['title']).''.htmlspecialchars($link['url']).''.htmlspecialchars($link['url']).''; if (!HIDE_TIMESTAMPS || isLoggedIn()) echo ''.htmlspecialchars($rfc822date).''; echo ''."\n"; $i++; } echo ''; exit; } // ------------------------------------------------------------------------------------------ // Ouput the last 50 links in ATOM format. function showATOM() { global $LINKSDB; // Optionnaly filter the results: $linksToDisplay=array(); if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']); elseif (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags'])); else $linksToDisplay = $LINKSDB; header('Content-Type: application/atom+xml; charset=utf-8'); $pageaddr=htmlspecialchars(serverUrl().$_SERVER["SCRIPT_NAME"]); $latestDate = ''; $entries=''; $i=0; $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys(). while ($i<50 && $i'.htmlspecialchars($link['url']).''; if (!HIDE_TIMESTAMPS || isLoggedIn()) $entries.=''.htmlspecialchars($iso8601date).''; $entries.=''.nl2br(htmlspecialchars($link['description'])).''."\n"; $i++; } $feed=''; $feed.=''.htmlspecialchars($GLOBALS['title']).''; if (!HIDE_TIMESTAMPS || isLoggedIn()) $feed.=''.htmlspecialchars($latestDate).''; $feed.=''; $feed.=''.htmlspecialchars($pageaddr).''; $feed.=''.htmlspecialchars($pageaddr).''."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do. $feed.=$entries; $feed.=''; echo $feed; exit; } // ------------------------------------------------------------------------------------------ // Render HTML page: function renderPage() { global $STARTTIME; global $LINKSDB; // Well... rendering the page would be 100x better with the excellent Smarty, but I don't want to tie this minimalist project to 100+ files. // So I use a custom templating system. // -------- Display login form. if (startswith($_SERVER["QUERY_STRING"],'do=login')) { if (OPEN_SHAARLI) { header('Location: ?'); exit; } // No need to login for open Shaarli if (!ban_canLogin()) { $loginform='
You have been banned from login after too many failed attempts. Try later.
'; $data = array('pageheader'=>$loginform,'body'=>'','onload'=>''); templatePage($data); exit; } $returnurl_html = (isset($_SERVER['HTTP_REFERER']) ? '' : ''); $loginform='
Login:    Password :
'; $loginform.=''.$returnurl_html.'
'; $onload = 'onload="document.loginform.login.focus();"'; $data = array('pageheader'=>$loginform,'body'=>'','onload'=>$onload); templatePage($data); exit; } // -------- User wants to logout. if (startswith($_SERVER["QUERY_STRING"],'do=logout')) { invalidateCaches(); logout(); header('Location: ?'); exit; } // -------- Tag cloud if (startswith($_SERVER["QUERY_STRING"],'do=tagcloud')) { $tags= $LINKSDB->allTags(); // We sort tags alphabetically, then choose a font size according to count. // First, find max value. $maxcount=0; foreach($tags as $key=>$value) $maxcount=max($maxcount,$value); ksort($tags); $cloud=''; foreach($tags as $key=>$value) { $size = max(40*$value/$maxcount,8); // Minimum size 8. $colorvalue = 128-ceil(127*$value/$maxcount); $color='rgb('.$colorvalue.','.$colorvalue.','.$colorvalue.')'; $cloud.= ''.$value.''.htmlspecialchars($key).' '; } $cloud='
'.$cloud.'
'; $data = array('pageheader'=>'','body'=>$cloud,'onload'=>''); templatePage($data); exit; } // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...) if (isset($_GET['addtag'])) { // Get previous URL (http_referer) and add the tag to the searchtags parameters in query. if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params); $params['searchtags'] = (empty($params['searchtags']) ? trim($_GET['addtag']) : trim($params['searchtags']).' '.urlencode(trim($_GET['addtag']))); unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different) header('Location: ?'.http_build_query($params)); exit; } // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...) if (isset($_GET['removetag'])) { // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query. if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?'); exit; } // In case browser does not send HTTP_REFERER parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params); if (isset($params['searchtags'])) { $tags = explode(' ',$params['searchtags']); $tags=array_diff($tags, array($_GET['removetag'])); // Remove value from array $tags. if (count($tags)==0) unset($params['searchtags']); else $params['searchtags'] = implode(' ',$tags); unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different) } header('Location: ?'.http_build_query($params)); exit; } // -------- User wants to change the number of links per page (linksperpage=...) if (isset($_GET['linksperpage'])) { if (is_numeric($_GET['linksperpage'])) { $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage'])); } header('Location: '.(empty($_SERVER['HTTP_REFERER'])?'?':$_SERVER['HTTP_REFERER'])); exit; } // -------- Handle other actions allowed for non-logged in users: if (!isLoggedIn()) { // User tries to post new link but is not loggedin: // Show login screen, then redirect to ?post=... if (isset($_GET['post'])) { header('Location: ?do=login&post='.urlencode($_GET['post']).(isset($_GET['title'])?'&title='.urlencode($_GET['title']):'').(isset($_GET['source'])?'&source='.urlencode($_GET['source']):'')); // Redirect to login page, then back to post link. exit; } // Show search form and display list of links. $searchform=<<
HTML; $data = array('pageheader'=>$searchform,'body'=>templateLinkList(),'onload'=>''); templatePage($data); exit; // Never remove this one ! All operations below are reserved for logged in user. } // -------- All other functions are reserved for the registered user: // -------- Display the Tools menu if requested (import/export/bookmarklet...) if (startswith($_SERVER["QUERY_STRING"],'do=tools')) { $pageabsaddr=serverUrl().$_SERVER["SCRIPT_NAME"]; // Why doesn't php have a built-in function for that ? // The javascript code for the bookmarklet: $changepwd = (OPEN_SHAARLI ? '' : 'Change password - Change your password.

' ); $toolbar= <<
{$changepwd} Configure your Shaarli - Change Title, timezone...

Rename/delete tags - Rename or delete a tag in all links.

Import - Import Netscape html bookmarks (as exported from Firefox, Chrome, Opera, delicious...)

Export - Export Netscape html bookmarks (which can be imported in Firefox, Chrome, Opera, delicious...)

Shaare link - Drag this link to your bookmarks toolbar (or right-click it and choose Bookmark This Link....). Then click "Shaare link" button in any page you want to share.

HTML; $data = array('pageheader'=>$toolbar,'body'=>'','onload'=>''); templatePage($data); exit; } // -------- User wants to change his/her password. if (startswith($_SERVER["QUERY_STRING"],'do=changepasswd')) { if (OPEN_SHAARLI) die('You are not supposed to change a password on an Open Shaarli.'); if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) { if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away ! // Make sure old password is correct. $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']); if ($oldhash!=$GLOBALS['hash']) { echo ''; exit; } // Save new password $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless. $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']); writeConfig(); echo ''; exit; } else { $token = getToken(); $changepwdform= << Old password:     New password: HTML; $data = array('pageheader'=>$changepwdform,'body'=>'','onload'=>'onload="document.changepasswordform.oldpassword.focus();"'); templatePage($data); exit; } } // -------- User wants to change configuration if (startswith($_SERVER["QUERY_STRING"],'do=configure')) { if (!empty($_POST['title']) ) { if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away ! $tz = 'UTC'; if (!empty($_POST['continent']) && !empty($_POST['city'])) if (isTZvalid($_POST['continent'],$_POST['city'])) $tz = $_POST['continent'].'/'.$_POST['city']; $GLOBALS['timezone'] = $tz; $GLOBALS['title']=$_POST['title']; writeConfig(); echo ''; exit; } else { $token = getToken(); $title = htmlspecialchars( empty($GLOBALS['title']) ? '' : $GLOBALS['title'] , ENT_QUOTES); list($timezone_form,$timezone_js) = templateTZform($GLOBALS['timezone']); $timezone_html=''; if ($timezone_form!='') $timezone_html='Timezone:'.$timezone_form.''; $changepwdform= << {$timezone_html}
Page title:
HTML; $data = array('pageheader'=>$changepwdform,'body'=>'','onload'=>'onload="document.configform.title.focus();"'); templatePage($data); exit; } } // -------- User wants to rename a tag or delete it if (startswith($_SERVER["QUERY_STRING"],'do=changetag')) { if (empty($_POST['fromtag'])) { $token = getToken(); $changetagform = << Tag:   or 
(Case sensitive) HTML; $data = array('pageheader'=>$changetagform,'body'=>'','onload'=>'onload="document.changetag.fromtag.focus();"'); templatePage($data); exit; } if (!tokenOk($_POST['token'])) die('Wrong token.'); if (!empty($_POST['deletetag']) && !empty($_POST['fromtag'])) { $needle=trim($_POST['fromtag']); $linksToAlter = $LINKSDB->filterTags($needle,true); // true for case-sensitive tag search. foreach($linksToAlter as $key=>$value) { $tags = explode(' ',trim($value['tags'])); unset($tags[array_search($needle,$tags)]); // Remove tag. $value['tags']=trim(implode(' ',$tags)); $LINKSDB[$key]=$value; } $LINKSDB->savedb(); // save to disk invalidateCaches(); echo ''; exit; } // Rename a tag: if (!empty($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) { $needle=trim($_POST['fromtag']); $linksToAlter = $LINKSDB->filterTags($needle,true); // true for case-sensitive tag search. foreach($linksToAlter as $key=>$value) { $tags = explode(' ',trim($value['tags'])); $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Remplace tags value. $value['tags']=trim(implode(' ',$tags)); $LINKSDB[$key]=$value; } $LINKSDB->savedb(); // save to disk invalidateCaches(); echo ''; exit; } } // -------- User wants to add a link without using the bookmarklet: show form. if (startswith($_SERVER["QUERY_STRING"],'do=addlink')) { $onload = 'onload="document.addform.post.focus();"'; $addform= '
'; $data = array('pageheader'=>$addform,'body'=>'','onload'=>$onload); templatePage($data); exit; } // -------- User clicked the "Save" button when editing a link: Save link to database. if (isset($_POST['save_edit'])) { if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away ! $tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces. $linkdate=$_POST['lf_linkdate']; $link = array('title'=>trim($_POST['lf_title']),'url'=>trim($_POST['lf_url']),'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0), 'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags)); if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title. $LINKSDB[$linkdate] = $link; $LINKSDB->savedb(); // save to disk invalidateCaches(); // If we are called from the bookmarklet, we must close the popup: if (isset($_GET['source']) && $_GET['source']=='bookmarklet') { echo ''; exit; } $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' ); header('Location: '.$returnurl); // After saving the link, redirect to the page the user was on. exit; } // -------- User clicked the "Cancel" button when editing a link. if (isset($_POST['cancel_edit'])) { // If we are called from the bookmarklet, we must close the popup; if (isset($_GET['source']) && $_GET['source']=='bookmarklet') { echo ''; exit; } $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' ); header('Location: '.$returnurl); // After canceling, redirect to the page the user was on. exit; } // -------- User clicked the "Delete" button when editing a link : Delete link from database. if (isset($_POST['delete_link'])) { if (!tokenOk($_POST['token'])) die('Wrong token.'); // We do not need to ask for confirmation: // - confirmation is handled by javascript // - we are protected from XSRF by the token. $linkdate=$_POST['lf_linkdate']; unset($LINKSDB[$linkdate]); $LINKSDB->savedb(); // save to disk invalidateCaches(); // If we are called from the bookmarklet, we must close the popup: if (isset($_GET['source']) && $_GET['source']=='bookmarklet') { echo ''; exit; } $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' ); header('Location: '.$returnurl); // After deleting the link, redirect to the page the user was on. exit; } // -------- User clicked the "EDIT" button on a link: Display link edit form. if (isset($_GET['edit_link'])) { $link = $LINKSDB[$_GET['edit_link']]; // Read database if (!$link) { header('Location: ?'); exit; } // Link not found in database. list($editform,$onload)=templateEditForm($link); $data = array('pageheader'=>$editform,'body'=>'','onload'=>$onload); templatePage($data); exit; } // -------- User want to post a new link: Display link edit form. if (isset($_GET['post'])) { $url=$_GET['post']; // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...) $i=strpos($url,'&utm_source='); if ($i) $url=substr($url,0,$i); $i=strpos($url,'?utm_source='); if ($i) $url=substr($url,0,$i); $i=strpos($url,'#xtor=RSS-'); if ($i) $url=substr($url,0,$i); $link_is_new = false; $link = $LINKSDB->getLinkFromUrl($url); // Check if URL is not already in database (in this case, we will edit the existing link) if (!$link) { $link_is_new = true; // This is a new link $linkdate = strval(date('Ymd_His')); $title = (empty($_GET['title']) ? '' : $_GET['title'] ); // Get title if it was provided in URL (by the bookmarklet). $description=''; $tags=''; $private=0; if (($url!='') && parse_url($url,PHP_URL_SCHEME)=='') $url = 'http://'.$url; // 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.) if (empty($title) && parse_url($url,PHP_URL_SCHEME)=='http') { list($status,$headers,$data) = getHTTP($url,4); // Short timeout to keep the application responsive. // FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) in html if (strpos($status,'200 OK')) $title=html_entity_decode(html_extract_title($data),ENT_QUOTES,'UTF-8'); } if ($url=='') $url='?'.smallHash($linkdate); // In case of empty URL, this is just a text (with a link that point to itself) $link = array('linkdate'=>$linkdate,'title'=>$title,'url'=>$url,'description'=>$description,'tags'=>$tags,'private'=>0); } list($editform,$onload)=templateEditForm($link,$link_is_new); $data = array('pageheader'=>$editform,'body'=>'','onload'=>$onload); templatePage($data); exit; } // -------- Export as Netscape Bookmarks HTML file. if (startswith($_SERVER["QUERY_STRING"],'do=export')) { if (empty($_GET['what'])) { $toolbar= <<
Export all - Export all links

Export public - Export public links only

Export private - Export private links only

HTML; $data = array('pageheader'=>$toolbar,'body'=>'','onload'=>''); templatePage($data); exit; } $exportWhat=$_GET['what']; if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export ???'); header('Content-Type: text/html; charset=utf-8'); header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html'); echo << Bookmarks

Bookmarks

HTML; foreach($LINKSDB as $link) { if ($exportWhat=='all' || ($exportWhat=='private' && $link['private']!=0) || ($exportWhat=='public' && $link['private']==0)) { echo '
'.htmlspecialchars($link['title'])."\n"; if ($link['description']!='') echo '
'.htmlspecialchars($link['description'])."\n"; } } echo '\n"; exit; } // -------- User is uploading a file for import if (startswith($_SERVER["QUERY_STRING"],'do=upload')) { // If file is too big, some form field may be missing. if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0)) { $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] ); echo ''; exit; } if (!tokenOk($_POST['token'])) die('Wrong token.'); importFile(); exit; } // -------- Show upload/import dialog: if (startswith($_SERVER["QUERY_STRING"],'do=import')) { $token = getToken(); $maxfilesize=getMaxFileSize(); $onload = 'onload="document.uploadform.filetoupload.focus();"'; $uploadform=<< Import Netscape html bookmarks (as exported from Firefox/Chrome/Opera/delicious/diigo...) (Max: {$maxfilesize} bytes).
 Import all links as private
 Overwrite existing links HTML; $data = array('pageheader'=>$uploadform,'body'=>'','onload'=>$onload ); templatePage($data); exit; } // -------- Otherwise, simply display search form and links: $searchform=<<
HTML; $data = array('pageheader'=>$searchform,'body'=>templateLinkList(),'onload'=>''); templatePage($data); exit; } // ----------------------------------------------------------------------------------------------- // Process the import file form. function importFile() { global $LINKSDB; $filename=$_FILES['filetoupload']['name']; $filesize=$_FILES['filetoupload']['size']; $data=file_get_contents($_FILES['filetoupload']['tmp_name']); $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private ? $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones ? $import_count=0; // Sniff file type: $type='unknown'; if (startsWith($data,'')) $type='netscape'; // Netscape bookmark file (aka Firefox). // Then import the bookmarks. if ($type=='netscape') { // This is a standard Netscape-style bookmark file. // This format is supported by all browsers (except IE, of course), also delicious, diigo and others. // I didn't want to use DOM... anyway, this is FAST (less than 1 second to import 7200 links (2.1 Mb html file)). foreach(explode('
',$data) as $html) // explode is very fast { $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0); $d = explode('
',$html); if (startswith($d[0],'(.*?)!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8'); preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes foreach($matches as $m) { $attr=$m[1]; $value=$m[2]; if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8'); elseif ($attr=='ADD_DATE') $link['linkdate']=date('Ymd_His',intval($value)); elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1); elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8'); } if ($link['linkdate']!='' && $link['url']!='' && ($overwrite || empty($LINKSDB[$link['linkdate']]))) { if ($private==1) $link['private']=1; $LINKSDB[$link['linkdate']] = $link; $import_count++; } } } $LINKSDB->savedb(); invalidateCaches(); echo ''; } else { echo ''; } } // ----------------------------------------------------------------------------------------------- /* Template for the edit link form Input: $link : link to edit (assocative array item as returned by the LINKDB class) Output: An array : (string) : The html code of the edit link form. (string) : The proper onload to use in body. Example: list($html,$onload)=templateEditForm($mylinkdb['20110805_124532']); echo $html; */ function templateEditForm($link,$link_is_new=false) { $url=htmlspecialchars($link['url']); $title=htmlspecialchars($link['title']); $tags=htmlspecialchars($link['tags']); $description=htmlspecialchars($link['description']); $private = ($link['private']==0 ? '' : 'checked="yes"'); // Automatically focus on empty fields: $onload='onload="document.linkform.lf_tags.focus();"'; if ($description=='') $onload='onload="document.linkform.lf_description.focus();"'; if ($title=='') $onload='onload="document.linkform.lf_title.focus();"'; // Do not show "Delete" button if this is a new link. $delete_button = ''; if ($link_is_new) $delete_button=''; $token=getToken(); // XSRF protection. $returnurl_html = (isset($_SERVER['HTTP_REFERER']) ? '' : ''); $editlinkform=<<
URL

Title

Description

Tags

 Private
{$delete_button} {$returnurl_html}
HTML; return array($editlinkform,$onload); } // ----------------------------------------------------------------------------------------------- // Template for the list of links. // Returns html code to show the list of link according to parameters passed in URL (search terms, page...) function templateLinkList() { global $LINKSDB; // Search according to entered search terms: $linksToDisplay=array(); $searched=''; if (!empty($_GET['searchterm'])) // Fulltext search { $linksToDisplay = $LINKSDB->filterFulltext(trim($_GET['searchterm'])); $searched=' '.count($linksToDisplay).' results for '.htmlspecialchars(trim($_GET['searchterm'])).':'; } elseif (!empty($_GET['searchtags'])) // Search by tag { $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags'])); $tagshtml=''; foreach(explode(' ',trim($_GET['searchtags'])) as $tag) $tagshtml.=''.htmlspecialchars($tag).' x '; $searched=' '.count($linksToDisplay).' results for tags '.$tagshtml.':'; } elseif (preg_match('/[a-zA-Z0-9-_@]{6}/',$_SERVER["QUERY_STRING"])) // Detect smallHashes in URL { $linksToDisplay = $LINKSDB->filterSmallHash($_SERVER["QUERY_STRING"]); } else $linksToDisplay = $LINKSDB; // otherwise, display without filtering. $linklist=''; $actions=''; // Handle paging. /* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess ??? "Warning: array_keys() expects parameter 1 to be array, object given in ... " If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); ) */ $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // Stupid and ugly. Thanks php. $pagecount = ceil(count($keys)/$_SESSION['LINKS_PER_PAGE']); $pagecount = ($pagecount==0 ? 1 : $pagecount); $page=( empty($_GET['page']) ? 1 : intval($_GET['page'])); $page = ( $page<1 ? 1 : $page ); $page = ( $page>$pagecount ? $pagecount : $page ); $i = ($page-1)*$_SESSION['LINKS_PER_PAGE']; // Start index. $end = $i+$_SESSION['LINKS_PER_PAGE']; while ($i<$end && $i'; $tags=''; if ($link['tags']!='') foreach(explode(' ',$link['tags']) as $tag) { $tags.=''.htmlspecialchars($tag).' '; } $linklist.='
  • '.thumbnail($link['url']); $linklist.='
    '.htmlspecialchars($title).''.$actions.'
    '; if ($description!='') $linklist.='
    '.nl2br($description).'

    '; if (!HIDE_TIMESTAMPS || isLoggedIn()) $linklist.=''.htmlspecialchars(linkdate2locale($link['linkdate'])).' - '; else $linklist.='link - '; $linklist.=''.htmlspecialchars($link['url']).'
    '.$tags."
    • \n"; $i++; } // Show paging. $searchterm= ( empty($_GET['searchterm']) ? '' : '&searchterm='.$_GET['searchterm'] ); $searchtags= ( empty($_GET['searchtags']) ? '' : '&searchtags='.$_GET['searchtags'] ); $paging=''; if ($i!=count($keys)) $paging.='◄Older'; $paging.= 'page '.$page.' / '.$pagecount.''; if ($page>1) $paging.='Newer►'; $linksperpage = << Links per page: 20 50 100
    HTML; $paging = '
    '.$linksperpage.$paging.'
    '; $linklist=''; return $linklist; } // Returns the HTML code to display a thumbnail for a link. // Understands various services (youtube.com...) function thumbnail($url) { if (!ENABLE_THUMBNAILS) return ''; // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link. // (eg. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/2.jpg ) // ^^^^^^^^^^^ ^^^^^^^^^^^ $domain = parse_url($url,PHP_URL_HOST); if ($domain=='youtube.com' || $domain=='www.youtube.com') { parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail if (!empty($params['v'])) return '
    '; } if ($domain=='imgur.com') { $path = parse_url($url,PHP_URL_PATH); if (substr_count($path,'/')==1) return '
    '; if (strpos($path,'/gallery/')==0) return '
    '; } if ($domain=='i.imgur.com') { $pi = pathinfo(parse_url($url,PHP_URL_PATH)); if (!empty($pi['filename'])) return '
    '; } if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com') { if (strpos($url,'dailymotion.com/video/')) { $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url); return '
    '; } } if (endsWith($domain,'.imageshack.us')) { $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION)); if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif') { $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext; return '
    '; } } // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL. // So we deport the thumbnail generation in order not to slow down page generation // (and we also cache the thumbnail) if ($domain=='flickr.com' || endsWith($domain,'.flickr.com') || $domain=='vimeo.com') { $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation) return '
    '; } // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif // Technically speaking, we should download ALL links and check their Content-Type to see if they are images. // But using the extension will do. $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION)); if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif') { $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation) return '
    '; } return ''; // No thumbnail. } // ----------------------------------------------------------------------------------------------- // Template for the whole page. /* Input: $data (associative array). Keys: 'body' : body of HTML document 'pageheader' : html code to show in page header (top of page) 'onload' : optional onload javascript for the */ function templatePage($data) { global $STARTTIME; global $LINKSDB; $shaarli_version = shaarli_version; $newversion=checkUpdate(); if ($newversion!='') $newversion='
    ● Shaarli '.htmlspecialchars($newversion).' is available.
    '; $linkcount = count($LINKSDB); $open=''; if (OPEN_SHAARLI) { $menu=' Tools  Add link'; $open='Open '; } else $menu=(isLoggedIn() ? ' Logout  Tools  Add link' : ' Login'); foreach(array('pageheader','body','onload') as $k) // make sure all required fields exist (put an empty string if not). { if (!array_key_exists($k,$data)) $data[$k]=''; } $jsincludes=''; $jsincludes_bottom = ''; if (OPEN_SHAARLI || isLoggedIn()) { $jsincludes=''; $source = serverUrl().$_SERVER['SCRIPT_NAME']; $jsincludes_bottom = << $(document).ready(function() { $('#lf_tags').autocomplete({source:'{$source}?ws=tags',minLength:1}); $('#searchtags').autocomplete({source:'{$source}?ws=tags',minLength:1}); $('#fromtag').autocomplete({source:'{$source}?ws=singletag',minLength:1}); }); JS; } $feedurl=htmlspecialchars(serverUrl().$_SERVER['SCRIPT_NAME']); $feedsearch=''; if (!empty($_GET['searchtags'])) $feedsearch.='&searchtags='.$_GET['searchtags']; elseif (!empty($_GET['searchterm'])) $feedsearch.='&searchterm='.$_GET['searchterm']; $version=shaarli_version; $title = htmlspecialchars( $GLOBALS['title'] ); echo << {$title} {$jsincludes} {$newversion} {$data['body']} HTML; $exectime = round(microtime(true)-$STARTTIME,4); echo ''; if (isLoggedIn()) echo ''; echo $jsincludes_bottom.''; } // ----------------------------------------------------------------------------------------------- // Installation // This function should NEVER be called if the file data/config.php exists. function install() { // On free.fr host, make sure the /sessions directory exists, otherwise login will not work. if (endsWith($_SERVER['SERVER_NAME'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705); if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) { $tz = 'UTC'; if (!empty($_POST['continent']) && !empty($_POST['city'])) if (isTZvalid($_POST['continent'],$_POST['city'])) $tz = $_POST['continent'].'/'.$_POST['city']; $GLOBALS['timezone'] = $tz; // Everything is ok, let's create config file. $GLOBALS['login'] = $_POST['setlogin']; $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless. $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']); $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.htmlspecialchars(serverUrl().$_SERVER['SCRIPT_NAME']) : $_POST['title'] ); writeConfig(); echo ''; exit; } // Display config form: list($timezone_form,$timezone_js) = templateTZform(); $timezone_html=''; if ($timezone_form!='') $timezone_html='Timezone:'.$timezone_form.''; echo <<Shaarli - Configuration${timezone_js}

    Shaarli - Shaare your links...

    It looks like it's the first time you run Shaarli. Please configure it:
    {$timezone_html}
    Login:
    Password:
    Page title:
    HTML; exit; } // Generates the timezone selection form and javascript. // Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected. // Output: array(html,js) // Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected. // Returns array('','') if server does not support timezones list. (eg. php 5.1 on free.fr) function templateTZform($ptz=false) { if (function_exists('timezone_identifiers_list')) // because of old php version (5.1) which can be found on free.fr { // Try to split the provided timezone. if ($ptz==false) { $l=timezone_identifiers_list(); $ptz=$l[0]; } $spos=strpos($ptz,'/'); $pcontinent=substr($ptz,0,$spos); $pcity=substr($ptz,$spos+1); // Display config form: $timezone_form = ''; $timezone_js = ''; // The list is in the forme "Europe/Paris", "America/Argentina/Buenos_Aires"... // We split the list in continents/cities. $continents = array(); $cities = array(); foreach(timezone_identifiers_list() as $tz) { if ($tz=='UTC') $tz='UTC/UTC'; $spos = strpos($tz,'/'); if ($spos) { $continent=substr($tz,0,$spos); $city=substr($tz,$spos+1); $continents[$continent]=1; if (!isset($cities[$continent])) $cities[$continent]=array(); $cities[$continent].=''; } } $continents_html = ''; $continents = array_keys($continents); foreach($continents as $continent) $continents_html.=''; $cities_html = $cities[$pcontinent]; $timezone_form = "Continent:

    "; $timezone_form .= "City:

    "; $timezone_js = "" ; return array($timezone_form,$timezone_js); } return array('',''); } // Tells if a timezone is valid or not. // If not valid, returns false. // If system does not support timezone list, returns false. function isTZvalid($continent,$city) { $tz = $continent.'/'.$city; if (function_exists('timezone_identifiers_list')) // because of old php version (5.1) which can be found on free.fr { if (in_array($tz, timezone_identifiers_list())) // it's a valid timezone ? return true; } return false; } // Webservices (for use with jQuery/jQueryUI) // eg. index.php?ws=tags&term=minecr function processWS() { if (empty($_GET['ws']) || empty($_GET['term'])) return; $term = $_GET['term']; global $LINKSDB; header('Content-Type: application/json; charset=utf-8'); // Search in tags (case insentitive, cumulative search) if ($_GET['ws']=='tags') { $tags=explode(' ',str_replace(',',' ',$term)); $last = array_pop($tags); // Get the last term ("a b c d" ==> "a b c", "d") $addtags=''; if ($tags) $addtags=implode(' ',$tags).' '; // We will pre-pend previous tags $suggested=array(); /* To speed up things, we store list of tags in session */ if (empty($_SESSION['tags'])) $_SESSION['tags'] = $LINKSDB->allTags(); foreach($_SESSION['tags'] as $key=>$value) { if (startsWith($key,$last,$case=false) && !in_array($key,$tags)) $suggested[$addtags.$key.' ']=0;//FIXME } echo json_encode(array_keys($suggested)); exit; } // Search a single tag (case sentitive, single tag search) if ($_GET['ws']=='singletag') { /* To speed up things, we store list of tags in session */ if (empty($_SESSION['tags'])) $_SESSION['tags'] = $LINKSDB->allTags(); foreach($_SESSION['tags'] as $key=>$value) { if (startsWith($key,$term,$case=true)) $suggested[$key]=0; } echo json_encode(array_keys($suggested)); exit; } } // Re-write configuration file according to globals. // Requires some $GLOBALS to be set (login,hash,salt,title). // If the config file cannot be saved, an error message is dislayed and the user is redirected to "Tools" menu. // (otherwise, the function simply returns.) function writeConfig() { if (is_file(CONFIG_FILE) && !isLoggedIn()) die('You are not authorized to alter config.'); // Only logged in user can alter config. $config=''; if (!file_put_contents(CONFIG_FILE,$config) || strcmp(file_get_contents(CONFIG_FILE),$config)!=0) { echo ''; exit; } } /* Because some f*cking services like Flickr require an extra HTTP request to get the thumbnail URL, I have deported the thumbnail URL code generation here, otherwise this would slow down page generation. The following function takes the URL a link (eg. a flickr page) and return the proper thumbnail. This function is called by passing the url: http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL] [URL] is the URL of the link (eg. a flickr page) [HMAC] is the signature for the [URL] (so that these URL cannot be forged). The function below will fetch the image from the webservice and store it in the cache. */ function genThumbnail() { // Make sure the parameters in the URL were generated by us. $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']); if ($sign!=$_GET['hmac']) die('Naughty boy !'); // Let's see if we don't already have the image for this URL in the cache. $thumbname=hash('sha1',$_GET['url']).'.jpg'; if (is_file(CACHEDIR.'/'.$thumbname)) { // We have the thumbnail, just serve it: header('Content-Type: image/jpeg'); echo file_get_contents(CACHEDIR.'/'.$thumbname); return; } // We may also serve a blank image (if service did not respond) $blankname=hash('sha1',$_GET['url']).'.gif'; if (is_file(CACHEDIR.'/'.$blankname)) { header('Content-Type: image/gif'); echo file_get_contents(CACHEDIR.'/'.$blankname); return; } // Otherwise, generate the thumbnail. $url = $_GET['url']; $domain = parse_url($url,PHP_URL_HOST); if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')) { // WTF ? I need a flickr API key to get a fucking thumbnail ? No way. // I'll extract the thumbnail URL myself. First, we have to get the flickr HTML page. // All images in Flickr are in the form: // http://farm[farm].static.flickr.com/[server]/[id]_[secret]_[size].jpg // Example: http://farm7.static.flickr.com/6205/6088513739_fc158467fe_z.jpg // We want the 240x120 format, which is _m.jpg. // We search for the first image in the page which does not have the _s size, // when use the _m to get the thumbnail. // Is this a link to an image, or to a flickr page ? $imageurl=''; if (endswith(parse_url($url,PHP_URL_PATH),'.jpg')) { // This is a direct link to an image. eg. http://farm1.static.flickr.com/5/5921913_ac83ed27bd_o.jpg preg_match('!(http://farm\d+.static.flickr.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches); if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg'; } else // this is a flickr page (html) { list($httpstatus,$headers,$data) = getHTTP($url,20); // Get the flickr html page. if (strpos($httpstatus,'200 OK')) { preg_match('!(http://farm\d+.static.flickr.com/\d+/\d+_\w+_)[^s].jpg!',$data,$matches); if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg'; } } if ($imageurl!='') { // Let's download the image. list($httpstatus,$headers,$data) = getHTTP($imageurl,10); // Image is 240x120, so 10 seconds to download should be enough. if (strpos($httpstatus,'200 OK')) { file_put_contents(CACHEDIR.'/'.$thumbname,$data); // Save image to cache. header('Content-Type: image/jpeg'); echo $data; return; } } } if ($domain=='vimeo.com' ) { // This is more complex: we have to perform a HTTP request, then parse the result. // Maybe we should deport this to javascript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098 $vid = substr(parse_url($url,PHP_URL_PATH),1); list($httpstatus,$headers,$data) = getHTTP('http://vimeo.com/api/v2/video/'.htmlspecialchars($vid).'.php',5); if (strpos($httpstatus,'200 OK')) { $t = unserialize($data); $imageurl = $t[0]['thumbnail_medium']; // Then we download the image and serve it to our client. list($httpstatus,$headers,$data) = getHTTP($imageurl,10); if (strpos($httpstatus,'200 OK')) { file_put_contents(CACHEDIR.'/'.$thumbname,$data); // Save image to cache. header('Content-Type: image/jpeg'); echo $data; return; } } } // For all other domains, we try to download the image and make a thumbnail. list($httpstatus,$headers,$data) = getHTTP($url,30); // We allow 30 seconds max to download (and downloads are limited to 4 Mb) if (strpos($httpstatus,'200 OK')) { $filepath=CACHEDIR.'/'.$thumbname; file_put_contents($filepath,$data); // Save image to cache. if (resizeImage($filepath)) { header('Content-Type: image/jpeg'); echo file_get_contents($filepath); return; } } // Otherwise, return an empty image (8x8 transparent gif) $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7'); file_put_contents(CACHEDIR.'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice. header('Content-Type: image/gif'); echo $blankgif; } // Make a thumbnail of the image (to width: 120 pixels) // Returns true if success, false otherwise. function resizeImage($filepath) { if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible. // Trick: some stupid people rename GIF as JPEG... or else. // So we really try to open each image type whatever the extension is. $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type. $im=false; if (strpos($header,'GIF8')==0) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough. if (strpos($header,'PNG')==1) $im = imagecreatefrompng($filepath); if (strpos($header,'JFIF')) $im = imagecreatefromjpeg($filepath); if (!$im) return false; // Unable to open image (corrupted or not an image) $w = imagesx($im); $h = imagesy($im); $nw = 120; // Desired width $nh = floor(($h*$nw)/$w); // Compute new width/height while keeping ratio // Resize image: $im2 = imagecreatetruecolor($nw,$nh); imagecopyresampled($im2, $im, 0, 0, 0, 0, $nw, $nh, $w, $h); imageinterlace($im2,true); // For progressive JPEG. $tempname=$filepath.'_TEMP.jpg'; imagejpeg($im2, $tempname, 90); imagedestroy($im); imagedestroy($im2); rename($tempname,$filepath); // Overwrite original picture with thumbnail. return true; } // Invalidate caches when the database is changed or the user logs out. // (eg. tags cache). function invalidateCaches() { unset($_SESSION['tags']); } if (startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database. $LINKSDB=new linkdb(isLoggedIn() || OPEN_SHAARLI); // Read links from database (and filter private links if used it not logged in). if (startswith($_SERVER["QUERY_STRING"],'ws=')) { processWS(); exit; } // Webservices (for jQuery/jQueryUI) if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=LINKS_PER_PAGE; if (startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; } if (startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; } renderPage(); ?>