<?php
// Shaarli 0.0.17 beta - Shaare your links...
// The personal, minimalist, super-fast, no-database delicious clone. By sebsauvage.net
// http://sebsauvage.net/wiki/doku.php?id=php:shaarli
// Licence: http://www.opensource.org/licenses/zlib-license.php
// Requires: php 5.1.x
// -----------------------------------------------------------------------------------------------
// User config:
define('DATADIR','data'); // Data subdirectory
define('CONFIG_FILE',DATADIR.'/config.php'); // Configuration file (user login/password)
define('DATASTORE',DATADIR.'/datastore.php'); // Data storage file.
define('LINKS_PER_PAGE',20); // Default links per page.
define('IPBANS_FILENAME',DATADIR.'/ipbans.php'); // File storage for failures and bans.
define('BAN_AFTER',4); // Ban IP after this many failures.
define('BAN_DURATION',1800); // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
define('OPEN_SHAARLI',false); // If true, anyone can add/edit/delete links without having to login
define('HIDE_TIMESTAMPS',false); // If true, the moment when links were saved are not shown to users that are not logged in.
// -----------------------------------------------------------------------------------------------
// Program config (touch at your own risks !)
define('UPDATECHECK_FILENAME',DATADIR.'/lastupdatecheck.txt'); // For updates check of Shaarli.
define('UPDATECHECK_INTERVAL',86400); // Updates check frequency for Shaarli. 86400 seconds=24 hours
ini_set('max_input_time','60'); // High execution time in case of problematic imports/exports.
ini_set('memory_limit', '128M'); // Try to set max upload file size and read (May not work on some hosts).
ini_set('post_max_size', '16M');
ini_set('upload_max_filesize', '16M');
define('PHPPREFIX','<?php /* '); // Prefix to encapsulate data in php code.
define('PHPSUFFIX',' */ ?>'); // 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','0.0.17 beta');
if (!is_dir(DATADIR)) { mkdir(DATADIR,0705); chmod(DATADIR,0705); }
if (!is_file(DATADIR.'/.htaccess')) { file_put_contents(DATADIR.'/.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.
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)<time()-(UPDATECHECK_INTERVAL)))
{
$version=shaarli_version;
list($httpstatus,$headers,$data) = getHTTP('http://sebsauvage.net/files/shaarli_version.txt',2);
if (strpos($httpstatus,'200 OK')) $version=$data;
// If failed, nevermind. We don't want to bother the user with that.
file_put_contents(UPDATECHECK_FILENAME,$version); // touch file date
}
// Compare versions:
$newestversion=file_get_contents(UPDATECHECK_FILENAME);
if ($newestversion!=shaarli_version) return $newestversion;
return '';
}
// -----------------------------------------------------------------------------------------------
// Log to text file
function logm($message)
{
$t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
file_put_contents(DATADIR.'/log.txt',$t,FILE_APPEND);
}
// ------------------------------------------------------------------------------------------
// 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;
}
$_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // User accessed a page : Update his/her session expiration date.
return true;
}
// Force logout.
function logout() { unset($_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, "<?php\n\$GLOBALS['IPBANS']=".var_export(array('FAILURES'=>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'] = $gb;
file_put_contents(IPBANS_FILENAME, "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
}
// 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'] = $gb;
file_put_contents(IPBANS_FILENAME, "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
}
// 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, "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
return true; // Ban has expired, user can login.
}
return false; // User is banned.
}
return true; // User is not banned.
}
// ------------------------------------------------------------------------------------------
// Process login form: Check if login/password is correct.
if (isset($_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'], $_POST['password'])))
{ // Login/password is ok.
ban_loginOk();
// Optional redirect after login:
if (isset($_GET['post'])) { header('Location: ?post='.urlencode($_GET['post']).(!empty($_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 '<script language="JavaScript">alert("Wrong login/password.");document.location=\'?do=login\';</script>'; // 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 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,$context,-1, 2000000); // We download at most 2 Mb from source.
if (!$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('!<title>(.*?)</title>!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;
}
// 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/xhtml+xml; charset=utf-8');
$pageaddr=htmlspecialchars(serverUrl().$_SERVER["SCRIPT_NAME"]);
echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
echo '<channel><title>Shared links on '.$pageaddr.'</title><link>'.$pageaddr.'</link>';
echo '<description>Shared links</description><language></language><copyright>'.$pageaddr.'</copyright>'."\n\n";
$i=0;
$keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
while ($i<50 && $i<count($keys))
{
$link = $linksToDisplay[$keys[$i]];
$rfc822date = linkdate2rfc822($link['linkdate']);
echo '<item><title>'.htmlspecialchars($link['title']).'</title><guid>'.htmlspecialchars($link['url']).'</guid><link>'.htmlspecialchars($link['url']).'</link>';
if (!HIDE_TIMESTAMPS || isLoggedIn()) echo '<pubDate>'.htmlspecialchars($rfc822date).'</pubDate>';
echo '<description><![CDATA['.htmlspecialchars($link['description']).']]></description></item>'."\n";
$i++;
}
echo '</channel></rss>';
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='<div id="headerform">You have been banned from login after too many failed attempts. Try later.</div>';
$data = array('pageheader'=>$loginform,'body'=>'','onload'=>'');
templatePage($data);
exit;
}
$returnurl_html = (isset($_SERVER['HTTP_REFERER']) ? '<input type="hidden" name="returnurl" value="'.htmlspecialchars($_SERVER['HTTP_REFERER']).'">' : '');
$loginform='<div id="headerform"><form method="post" name="loginform">Login: <input type="text" name="login"> Password : <input type="password" name="password"> <input type="submit" value="Login" class="bigbutton"><input type="hidden" name="token" value="'.getToken().'">'.$returnurl_html.'</form></div>';
$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.')';
$cloud.= '<span style="color:#99f; font-size:9pt; padding-left:5px; padding-right:2px;">'.$value.'</span><a href="?searchtags='.htmlspecialchars($key).'" style="font-size:'.$size.'pt; font-weight:bold; color:'.$color.';">'.htmlspecialchars($key).'</a> ';
}
$cloud='<div id="cloudtag">'.$cloud.'</div>';
$data = array('pageheader'=>'','body'=>$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($_GET['source'])?'&source='.urlencode($_GET['source']):'')); // Redirect to login page, then back to post link.
exit;
}
// Show search form and display list of links.
$searchform=<<<HTML
<div id="headerform" style="width:100%; white-space:nowrap;";>
<form method="GET" name="searchform" style="display:inline;"><input type="text" name="searchterm" style="width:50%" value=""> <input type="submit" value="Search" class="bigbutton"></form>
<form method="GET" name="tagfilter" style="display:inline;padding-left:24px;"><input type="text" name="searchtags" id="searchtags" style="width:20%" value=""> <input type="submit" value="Filter by tag" class="bigbutton"></form>
</div>
HTML;
$onload = 'onload="document.searchform.searchterm.focus();"';
$data = array('pageheader'=>$searchform,'body'=>templateLinkList(),'onload'=>$onload);
templatePage($data);
exit; // Never remove this one !
}
// -------- 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 ? '' : '<a href="?do=changepasswd"><b>Change password</b></a> - Change your password.<br><br>' );
$toolbar= <<<HTML
<div id="headerform"><br>
{$changepwd}
<a href="?do=changetag"><b>Rename/delete tags</b></a> - Rename or delete a tag in all links.<br><br>
<a href="?do=import"><b>Import</b></a> - Import Netscape html bookmarks (as exported from Firefox, Chrome, Opera, delicious...)<br><br>
<a href="?do=export"><b>Export</b></a> - Export Netscape html bookmarks (which can be imported in Firefox, Chrome, Opera, delicious...)<br><br>
<a class="smallbutton" style="color:black;" onclick="alert('Drag this link to your bookmarks toolbar, or right-click it and choose Bookmark This Link...');return false;" href="javascript:javascript:(function(){var%20url%20=%20location.href;var%20title%20=%20document.title%20||%20url;window.open('{$pageabsaddr}?post='%20+%20encodeURIComponent(url)+'&title='%20+%20encodeURIComponent(title)+'&source=bookmarklet','_blank','menubar=no,height=400,width=608,toolbar=no,scrollbars=no,status=no');})();">Shaare link</a> - 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.<br><br>
</div>
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 '<script language="JavaScript">alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
// Save new password
$salt=sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
$hash = sha1($_POST['setpassword'].$GLOBALS['login'].$salt);
$config='<?php $GLOBALS[\'login\']='.var_export($GLOBALS['login'],true).'; $GLOBALS[\'hash\']='.var_export($hash,true).'; $GLOBALS[\'salt\']='.var_export($salt,true).'; date_default_timezone_set('.var_export(date_default_timezone_get(),true).'); ?>';
if (!file_put_contents(CONFIG_FILE,$config) || strcmp(file_get_contents(CONFIG_FILE),$config)!=0)
{
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>';
exit;
}
echo '<script language="JavaScript">alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
exit;
}
else
{
$token = getToken();
$changepwdform= <<<HTML
<form method="POST" action="" name="changepasswordform" style="padding:10 10 10 10;">
Old password: <input type="password" name="oldpassword">
New password: <input type="password" name="setpassword">
<input type="hidden" name="token" value="{$token}">
<input type="submit" name="Save" value="Save password" class="bigbutton"></form>
HTML;
$data = array('pageheader'=>$changepwdform,'body'=>'','onload'=>'onload="document.changepasswordform.oldpassword.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();
$changetagform = <<<HTML
<form method="POST" action="" name="changetag" style="padding:10 10 10 10;">
<input type="hidden" name="token" value="{$token}">
Tag: <input type="text" name="fromtag" id="fromtag">
<input type="text" name="totag" style="margin-left:40px;"><input type="submit" name="renametag" value="Rename tag" class="bigbutton">
or <input type="submit" name="deletetag" value="Delete tag" class="bigbutton" onClick="return confirmDeleteTag();"><br>(Case sensitive)</form>
<script language="JavaScript">function confirmDeleteTag() { var agree=confirm("Are you sure you want to delete this tag from all links ?"); if (agree) return true ; else return false ; }</script>
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;
}
$LINKSDB->savedb(); // save to disk
invalidateCaches();
echo '<script language="JavaScript">alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
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;
}
$LINKSDB->savedb(); // save to disk
invalidateCaches();
echo '<script language="JavaScript">alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
exit;
}
}
// -------- User wants to add a link without using the bookmarklet: show form.
if (startswith($_SERVER["QUERY_STRING"],'do=addlink'))
{
$onload = 'onload="document.addform.post.focus();"';
$addform= '<div id="headerform"><form method="GET" action="" name="addform"><input type="text" name="post" style="width:70%;"> <input type="submit" value="Add link" class="bigbutton"></div>';
$data = array('pageheader'=>$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 !
$linkdate=$_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'=>trim($_POST['lf_tags']));
if ($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 '<script language="JavaScript">self.close();</script>'; 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 '<script language="JavaScript">self.close();</script>'; 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 '<script language="JavaScript">self.close();</script>'; 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=''; $private=0;
if (parse_url($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) <head> in html
if (strpos($status,'200 OK')) $title=html_entity_decode(html_extract_title($data),ENT_QUOTES,'UTF-8');
}
$link = array('linkdate'=>$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= <<<HTML
<div id="headerform"><br>
<a href="?do=export&what=all"><b>Export all</b></a> - Export all links<br><br>
<a href="?do=export&what=public"><b>Export public</b></a> - Export public links only<br><br>
<a href="?do=export&what=private"><b>Export private</b></a> - Export private links only<br><br>
</div>
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 <<<HTML
<!DOCTYPE NETSCAPE-Bookmark-file-1>
<!-- This is an automatically generated file.
It will be read and overwritten.
DO NOT EDIT! -->
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<TITLE>Bookmarks</TITLE>
<H1>Bookmarks</H1>
HTML;
foreach($LINKSDB as $link)
{
if ($exportWhat=='all' ||
($exportWhat=='private' && $link['private']!=0) ||
($exportWhat=='public' && $link['private']==0))
{
echo '<DT><A HREF="'.htmlspecialchars($link['url']).'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
if ($link['tags']!='') echo ' TAGS="'.htmlspecialchars(str_replace(' ',',',$link['tags'])).'"';
echo '>'.htmlspecialchars($link['title'])."</A>\n";
if ($link['description']!='') echo '<DD>'.htmlspecialchars($link['description'])."\n";
}
}
echo '<!-- Shaarli '.$exportWhat.' bookmarks export on '.date('Y/m/d H:i:s')."-->\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']) ? '?' : $_SERVER['HTTP_REFERER'] );
echo '<script language="JavaScript">alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.htmlspecialchars($returnurl).'\';</script>';
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();"';
$uploadform=<<<HTML
<div id="headerform">
Import Netscape html bookmarks (as exported from Firefox/Chrome/Opera/delicious/diigo...) (Max: {$maxfilesize} bytes).
<form method="POST" action="?do=upload" enctype="multipart/form-data" name="uploadform">
<input type="hidden" name="token" value="{$token}">
<input type="file" name="filetoupload" size="80">
<input type="hidden" name="MAX_FILE_SIZE" value="{$maxfilesize}">
<input type="submit" name="import_file" value="Import" class="bigbutton"><br>
<input type="checkbox" name="private"> Import all links as private<br>
<input type="checkbox" name="overwrite"> Overwrite existing links
</form>
</div>
HTML;
$data = array('pageheader'=>$uploadform,'body'=>'','onload'=>$onload );
templatePage($data);
exit;
}
// -------- Otherwise, simply display search form and links:
$searchform=<<<HTML
<div id="headerform" style="width:100%; white-space:nowrap;";>
<form method="GET" name="searchform" style="display:inline;"><input type="text" name="searchterm" style="width:50%" value=""> <input type="submit" value="Search" class="bigbutton"></form>
<form method="GET" name="tagfilter" style="display:inline;padding-left:24px;"><input type="text" name="searchtags" id="searchtags" style="width:20%" value=""> <input type="submit" value="Filter by tag" class="bigbutton"></form>
</div>
HTML;
$onload = 'onload="document.searchform.searchterm.focus();"';
$data = array('pageheader'=>$searchform,'body'=>templateLinkList(),'onload'=>$onload);
templatePage($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,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
// Then import the bookmarks.
if ($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('<DT>',$data) as $html) // explode is very fast
{
$link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
$d = explode('<DD>',$html);
if (startswith($d[0],'<A '))
{
$link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
preg_match('!<A .*?>(.*?)</A>!i',$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++;
}
}
}
$LINKSDB->savedb();
invalidateCaches();
echo '<script language="JavaScript">alert("File '.$filename.' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
}
else
{
echo '<script language="JavaScript">alert("File '.$filename.' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
}
}
// -----------------------------------------------------------------------------------------------
/* 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.
$delete_button = '<input type="submit" value="Delete" name="delete_link" class="bigbutton" style="margin-left:180px;" onClick="return confirmDeleteLink();">';
if ($link_is_new) $delete_button='';
$token=getToken(); // XSRF protection.
$returnurl_html = (isset($_SERVER['HTTP_REFERER']) ? '<input type="hidden" name="returnurl" value="'.htmlspecialchars($_SERVER['HTTP_REFERER']).'">' : '');
$editlinkform=<<<HTML
<div id="editlinkform">
<form method="post" name="linkform">
<input type="hidden" name="lf_linkdate" value="{$link['linkdate']}">
<i>URL</i><br><input type="text" name="lf_url" value="{$url}" style="width:100%"><br>
<i>Title</i><br><input type="text" name="lf_title" value="{$title}" style="width:100%"><br>
<i>Description</i><br><textarea name="lf_description" rows="4" cols="25" style="width:100%">{$description}</textarea><br>
<i>Tags</i><br><input type="text" id="lf_tags" name="lf_tags" value="{$tags}" style="width:100%"><br>
<input type="checkbox" {$private} style="margin:7 0 10 0;" name="lf_private"> <i>Private</i><br>
<input type="submit" value="Save" name="save_edit" class="bigbutton" style="margin-left:40px;">
<input type="submit" value="Cancel" name="cancel_edit" class="bigbutton" style="margin-left:40px;">
{$delete_button}
<input type="hidden" name="token" value="{$token}">
{$returnurl_html}
</form>
</div>
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']));
$searched=' <b>'.count($linksToDisplay).' results for <i>'.htmlspecialchars(trim($_GET['searchterm'])).'</i></b>:';
}
elseif (!empty($_GET['searchtags'])) // Search by tag
{
$linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
$tagshtml=''; foreach(explode(' ',trim($_GET['searchtags'])) as $tag) $tagshtml.='<span class="linktag" title="Remove tag"><a href="?removetag='.htmlspecialchars($tag).'">'.htmlspecialchars($tag).' <span style="border-left:1px solid #aaa; padding-left:5px; color:#6767A7;">x</span></a></span> ';
$searched=' <b>'.count($linksToDisplay).' results for tags '.$tagshtml.':</b>';
}
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 && $i<count($keys))
{
$link = $linksToDisplay[$keys[$i]];
$description=$link['description'];
$title=$link['title'];
$classprivate = ($link['private']==0 ? '' : 'class="private"');
if (isLoggedIn()) $actions=' <form method="GET" class="buttoneditform"><input type="hidden" name="edit_link" value="'.$link['linkdate'].'"><input type="submit" value="Edit" class="smallbutton"></form>';
$tags='';
if ($link['tags']!='') foreach(explode(' ',$link['tags']) as $tag) { $tags.='<span class="linktag" title="Add tag"><a href="?addtag='.htmlspecialchars($tag).'">'.htmlspecialchars($tag).'</a></span> '; }
$linklist.='<li '.$classprivate.'><span class="linktitle"><a href="'.htmlspecialchars($link['url']).'">'.htmlspecialchars($title).'</a></span>'.$actions.'<br>';
if ($description!='') $linklist.='<div class="linkdescription">'.nl2br(htmlspecialchars($description)).'</div><br>';
if (!HIDE_TIMESTAMPS || isLoggedIn()) $linklist.='<span class="linkdate">'.htmlspecialchars(linkdate2locale($link['linkdate'])).' - </span>';
$linklist.='<span class="linkurl">'.htmlspecialchars($link['url']).'</span><br>'.$tags."</li>\n";
$i++;
}
// Show paging.
$searchterm= ( empty($_GET['searchterm']) ? '' : '&searchterm='.$_GET['searchterm'] );
$searchtags= ( empty($_GET['searchtags']) ? '' : '&searchtags='.$_GET['searchtags'] );
$paging='';
if ($i!=count($keys)) $paging.='<a href="?page='.($page+1).$searchterm.$searchtags.'">◄Older</a>';
$paging.= '<span style="color:#fff; padding:0 20 0 20;">page '.$page.' / '.$pagecount.'</span>';
if ($page>1) $paging.='<a href="?page='.($page-1).$searchterm.$searchtags.'">Newer►</a>';
$linksperpage = <<<HTML
<div style="float:right; padding-right:5px;">
Links per page: <a href="?linksperpage=20">20</a> <a href="?linksperpage=50">50</a> <a href="?linksperpage=100">100</a>
<form method="GET" style="display:inline;"><input type="text" name="linksperpage" size="2" style="height:15px;"></form></div>
HTML;
$paging = '<div class="paging">'.$linksperpage.$paging.'</div>';
$linklist='<div id="linklist">'.$paging.$searched.'<ul>'.$linklist.'</ul>'.$paging.'</div>';
return $linklist;
}
// -----------------------------------------------------------------------------------------------
// Template for the whole page.
/* Input: $data (associative array).
Keys: 'body' : body of HTML document
'pageheader' : html code to show in page header (top of page)
'onload' : optional onload javascript for the <body>
*/
function templatePage($data)
{
global $STARTTIME;
global $LINKSDB;
$shaarli_version = shaarli_version;
$newversion=checkUpdate();
if ($newversion!='') $newversion='<div id="newversion"><span style="text-decoration:blink;">●</span> Shaarli '.htmlspecialchars($newversion).' is <a href="http://sebsauvage.net/wiki/doku.php?id=php:shaarli#download">available</a>.</div>';
$linkcount = count($LINKSDB);
$open='';
if (OPEN_SHAARLI)
{
$menu=' <a href="?do=tools">Tools</a> <a href="?do=addlink"><b>Add link</b></a>';
$open='Open ';
}
else
$menu=(isLoggedIn() ? ' <a href="?do=logout">Logout</a> <a href="?do=tools">Tools</a> <a href="?do=addlink"><b>Add link</b></a>' : ' <a href="?do=login">Login</a>');
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='<script language="JavaScript" src="jquery.min.js"></script><script language="JavaScript" src="jquery-ui.custom.min.js"></script>';
$source = serverUrl().$_SERVER['SCRIPT_NAME'];
$jsincludes_bottom = <<<JS
<script language="JavaScript">
$(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});
});
</script>
JS;
}
$feedurl=htmlspecialchars(serverUrl().$_SERVER['SCRIPT_NAME'].'?do=rss');
if (!empty($_GET['searchtags'])) $feedurl.='&searchtags='.$_GET['searchtags'];
elseif (!empty($_GET['searchterm'])) $feedurl.='&searchterm='.$_GET['searchterm'];
echo <<<HTML
<html>
<head>
<title>{$open}Shaarli - Let's shaare your links...</title>
<link rel="alternate" type="application/rss+xml" href="{$feedurl}" />
<link type="text/css" rel="stylesheet" href="shaarli.css" />
{$jsincludes}
</head>
<body {$data['onload']}>{$newversion}
<div id="pageheader"><div style="float:right; font-style:italic; color:#bbb; text-align:right; padding:0 5 0 0;">Shaare your links...<br>{$linkcount} links</div>
<b><i>{$open}Shaarli {$shaarli_version}</i></b> - <a href="?">Home</a> {$menu} <a href="{$feedurl}" style="padding-left:30px;">RSS Feed</a>
<a href="?do=tagcloud">Tag cloud</a>
{$data['pageheader']}
</div>
{$data['body']}
HTML;
$exectime = round(microtime(true)-$STARTTIME,4);
echo '<div id="footer"><b><a href="http://sebsauvage.net/wiki/doku.php?id=php:shaarli">Shaarli '.shaarli_version.'</a></b> - The personal, minimalist, super-fast, no-database delicious clone. By sebsauvage.net<br>Who gives a shit that this page was generated in '.$exectime.' seconds ?</div>';
if (isLoggedIn()) echo '<script language="JavaScript">function confirmDeleteLink() { var agree=confirm("Are you sure you want to delete this link ?"); if (agree) return true ; else return false ; }</script>';
echo $jsincludes_bottom.'</body></html>';
}
// -----------------------------------------------------------------------------------------------
// Installation
// This function should NEVER be called if the file data/config.php exists.
function install()
{
// On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
if (endsWith($_SERVER['SERVER_NAME'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
{
$tz=(empty($_POST['settimezone']) ? 'UTC':$_POST['settimezone']);
// Everything is ok, let's create config file.
$salt=sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
$hash = sha1($_POST['setpassword'].$_POST['setlogin'].$salt);
$config='<?php $GLOBALS[\'login\']='.var_export($_POST['setlogin'],true).'; $GLOBALS[\'hash\']='.var_export($hash,true).'; $GLOBALS[\'salt\']='.var_export($salt,true).'; date_default_timezone_set('.var_export($tz,true).'); ?>';
if (!file_put_contents(CONFIG_FILE,$config) || strcmp(file_get_contents(CONFIG_FILE),$config)!=0)
{
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>';
exit;
}
echo '<script language="JavaScript">alert("Shaarli is now configured. Please enter your login/password and start shaaring your links !");document.location=\'?do=login\';</script>';
exit;
}
// Display config form:
$timezoneselect='';
if (function_exists('timezone_identifiers_list')) // because of old php version (5.1) which can be found on free.fr
{
$timezones='';
foreach(timezone_identifiers_list() as $tz) $timezones.='<option value="'.htmlspecialchars($tz).'">'.htmlspecialchars($tz)."</option>\n";
$timezoneselect='Timezone: <select name="settimezone"><option value="" selected>(please select:)</option>'.$timezones.'</select><br><br>';
}
echo <<<HTML
<html><head><title>Shaarli - Configuration</title><link type="text/css" rel="stylesheet" href="shaarli.css" /></head>
<body onload="document.configform.setlogin.focus();" style="padding:20px;"><h1>Shaarli - Shaare your links...</h1>
It looks like it's the first time you run Shaarli. Please chose a login/password and a timezone:<br>
<form method="POST" action="" name="configform" style="border:1px solid black; padding:10 10 10 10;">
Login: <input type="text" name="setlogin"><br><br>Password: <input type="password" name="setpassword"><br><br>
{$timezoneselect}
<input type="submit" name="Save" value="Save config" class="bigbutton"></form></body></html>
HTML;
exit;
}
// Webservices (for use with jQuery/jQueryUI)
// eg. index.php?ws=tags&term=minecr
function processWS()
{
if (empty($_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')
{
$tags=explode(' ',$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)) $suggested[$addtags.$key.' ']=0;
}
echo json_encode(array_keys($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($suggested));
exit;
}
}
// Invalidate caches when the database is changed or the user logs out.
// (eg. tags cache).
function invalidateCaches()
{
unset($_SESSION['tags']);
}
$LINKSDB=new linkdb(isLoggedIn() || OPEN_SHAARLI); // Read links from database (and filter private links if used it not logged in).
if (startswith($_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; }
renderPage();
?>
