X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=index.php;h=c102e4222fcb8406b5af2575af6506c958ba0b63;hb=ae00595b1ca1cdcbbef5090b1ab907c54be4aa48;hp=8197719ac26020f1e589970af1a4c98de2729668;hpb=8a80e4fe07c2d116ad87e7d0699859d10229607e;p=github%2Fshaarli%2FShaarli.git

diff --git a/index.php b/index.php
index 8197719a..c102e422 100644
--- a/index.php
+++ b/index.php
@@ -1,9 +1,15 @@
 <?php
-// Shaarli 0.0.40 beta - Shaare your links...
+// Shaarli 0.0.41 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  (but autocomplete fields will only work if you have php 5.2.x)
+// -----------------------------------------------------------------------------------------------
+// NEVER TRUST IN PHP.INI
+// Some hosts do not define a default timezone in php.ini,
+// so we have to do this for avoid the strict standard error.
+date_default_timezone_set('UTC');
+
 // -----------------------------------------------------------------------------------------------
 // Hardcoded parameter (These parameters can be overwritten by creating the file /config/options.php)
 $GLOBALS['config']['DATADIR'] = 'data'; // Data subdirectory
@@ -28,14 +34,16 @@ $GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400 ; // Updates check frequency
 // Optionnal config file.
 if (is_file($GLOBALS['config']['DATADIR'].'/options.php')) require($GLOBALS['config']['DATADIR'].'/options.php');
 
-define('shaarli_version','0.0.40 beta');
+define('shaarli_version','0.0.41 beta');
 define('PHPPREFIX','<?php /* '); // Prefix to encapsulate data in php code.
 define('PHPSUFFIX',' */ ?>'); // Suffix to encapsulate data in php code.
+// http://server.com/x/shaarli --> /shaarli/
+define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
 
 // Force cookie path (but do not change lifetime)
 $cookie=session_get_cookie_params();
 $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
-session_set_cookie_params($cookie['lifetime'],$cookiedir); // Set default cookie expiration and path.
+session_set_cookie_params($cookie['lifetime'],$cookiedir,$_SERVER['HTTP_HOST']); // Set default cookie expiration and path.
 
 // Set session parameters on server side.
 define('INACTIVITY_TIMEOUT',3600); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
@@ -78,9 +86,12 @@ header("Cache-Control: post-check=0, pre-check=0", false);
 header("Pragma: no-cache");
 
 // Directories creations (Note that your web host may require differents rights than 705.)
+if (!is_writable(realpath(dirname(__FILE__)))) die('<pre>ERROR: Shaarli does not have the right to write in its own directory ('.realpath(dirname(__FILE__)).').</pre>');
 if (!is_dir($GLOBALS['config']['DATADIR'])) { mkdir($GLOBALS['config']['DATADIR'],0705); chmod($GLOBALS['config']['DATADIR'],0705); }
 if (!is_dir('tmp')) { mkdir('tmp',0705); chmod('tmp',0705); } // For RainTPL temporary files.
 if (!is_file($GLOBALS['config']['DATADIR'].'/.htaccess')) { file_put_contents($GLOBALS['config']['DATADIR'].'/.htaccess',"Allow from none\nDeny from all\n"); } // Protect data files.
+// Second check to see if Shaarli can write in its directory, because on some hosts is_writable() is not reliable.
+if (!is_file($GLOBALS['config']['DATADIR'].'/.htaccess')) die('<pre>ERROR: Shaarli does not have the right to write in its data directory ('.realpath($GLOBALS['config']['DATADIR']).').</pre>');
 if ($GLOBALS['config']['ENABLE_LOCALCACHE'])
 {
     if (!is_dir($GLOBALS['config']['CACHEDIR'])) { mkdir($GLOBALS['config']['CACHEDIR'],0705); chmod($GLOBALS['config']['CACHEDIR'],0705); }
@@ -101,6 +112,8 @@ if (!is_file($GLOBALS['config']['CONFIG_FILE'])) install();
 
 require $GLOBALS['config']['CONFIG_FILE'];  // Read login/password hash into $GLOBALS.
 
+// a token depending of deployment salt, user password, and the current ip
+define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
 
 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.
@@ -212,7 +225,7 @@ function nl2br_escaped($html)
     return str_replace('>','&gt;',str_replace('<','&lt;',nl2br($html)));
 }
 
-/* Returns the small hash of a string
+/* Returns the small hash of a string, using RFC 4648 base64url format
    eg. smallHash('20111006_131924') --> yZH23w
    Small hashes:
      - are unique (well, as unique as crc32, at last)
@@ -224,10 +237,7 @@ function nl2br_escaped($html)
 function smallHash($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 $t;
+    return strtr($t, '+/', '-_');
 }
 
 // In a string, converts urls to clickable links.
@@ -288,16 +298,20 @@ function allIPs()
     return $ip;
 }
 
+function fillSessionInfo() {
+	$_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.
+	$_SESSION['username']=$GLOBALS['login'];
+	$_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT;  // Set session expiration.
+}
+
 // Check that user/password is correct.
 function check_auth($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.
+		fillSessionInfo();
         logm('Login successful');
         return True;
     }
@@ -312,6 +326,11 @@ function isLoggedIn()
 
     if (!isset($GLOBALS['login'])) return false;  // Shaarli is not configured yet.
 
+	if (@$_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN)
+	{
+		fillSessionInfo();
+		return true;
+	}
     // If session does not exist on server side, or IP address has changed, or session has expired, logout.
     if (empty($_SESSION['uid']) || ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) || time()>=$_SESSION['expires_on'])
     {
@@ -325,7 +344,9 @@ function isLoggedIn()
 }
 
 // Force logout.
-function logout() { if (isset($_SESSION)) { unset($_SESSION['uid']); unset($_SESSION['ip']); unset($_SESSION['username']); unset($_SESSION['privateonly']); }  }
+function logout() { if (isset($_SESSION)) { unset($_SESSION['uid']); unset($_SESSION['ip']); unset($_SESSION['username']); unset($_SESSION['privateonly']); }  
+setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH);
+}
 
 
 // ------------------------------------------------------------------------------------------
@@ -387,18 +408,19 @@ if (isset($_POST['login']))
         // If user wants to keep the session cookie even after the browser closes:
         if (!empty($_POST['longlastingsession']))
         {
+			setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
             $_SESSION['longlastingsession']=31536000;  // (31536000 seconds = 1 year)
             $_SESSION['expires_on']=time()+$_SESSION['longlastingsession'];  // Set session expiration on server-side.
 
             $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
-            session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir); // Set session cookie expiration on client side
+            session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['HTTP_HOST']); // Set session cookie expiration on client side
             // Note: Never forget the trailing slash on the cookie path !
             session_regenerate_id(true);  // Send cookie with new expiration date to browser.
         }
         else // Standard session expiration (=when browser closes)
         {
             $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
-            session_set_cookie_params(0,$cookiedir); // 0 means "When browser closes"
+            session_set_cookie_params(0,$cookiedir,$_SERVER['HTTP_HOST']); // 0 means "When browser closes"
             session_regenerate_id(true);
         }
         // Optional redirect after login:
@@ -430,7 +452,7 @@ function serverUrl()
 {
     $https = (!empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS'])=='on')) || $_SERVER["SERVER_PORT"]=='443'; // HTTPS detection.
     $serverport = ($_SERVER["SERVER_PORT"]=='80' || ($https && $_SERVER["SERVER_PORT"]=='443') ? '' : ':'.$_SERVER["SERVER_PORT"]);
-    return 'http'.($https?'s':'').'://'.$_SERVER["SERVER_NAME"].$serverport;
+    return 'http'.($https?'s':'').'://'.$_SERVER['HTTP_HOST'].$serverport;
 }
 
 // Returns the absolute URL of current script, without the query.
@@ -557,7 +579,7 @@ function getHTTP($url,$timeout=30)
 {
     try
     {
-        $options = array('http'=>array('method'=>'GET','timeout' => $timeout)); // Force network timeout
+        $options = array('http'=>array('method'=>'GET','timeout' => $timeout, 'user_agent' => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0')); // 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) { return array('HTTP Error',array(),''); }
@@ -731,7 +753,7 @@ class linkdb implements Iterator, Countable, ArrayAccess
              $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');
+             $link = array('title'=>'My secret stuff... - Pastebin.com','url'=>'http://sebsauvage.net/paste/?8434b27936c09649#bR7XsXhoTiLcqCpQbmOpBi3rq2zzQUC5hBI7ZT1O3x8=','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']] = $link;
              file_put_contents($GLOBALS['config']['DATASTORE'], PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX); // Write database to disk
         }
@@ -867,7 +889,7 @@ class linkdb implements Iterator, Countable, ArrayAccess
 }
 
 // ------------------------------------------------------------------------------------------
-// Ouput the last 50 links in RSS 2.0 format.
+// Ouput the last N links in RSS 2.0 format.
 function showRSS()
 {
     header('Content-Type: application/rss+xml; charset=utf-8');
@@ -889,6 +911,11 @@ function showRSS()
     if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
     elseif (!empty($_GET['searchtags']))   $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
     else $linksToDisplay = $LINKSDB;
+    $nblinksToDisplay = 50;  // Number of links to display.
+    if (!empty($_GET['nb']))  // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
+    { 
+        $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
+    }
 
     $pageaddr=htmlspecialchars(indexUrl());
     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
@@ -903,7 +930,7 @@ function showRSS()
     }
     $i=0;
     $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; }  // No, I can't use array_keys().
-    while ($i<50 && $i<count($keys))
+    while ($i<$nblinksToDisplay && $i<count($keys))
     {
         $link = $linksToDisplay[$keys[$i]];
         $guid = $pageaddr.'?'.smallHash($link['linkdate']);
@@ -928,7 +955,7 @@ function showRSS()
         echo '<description><![CDATA['.nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description'])))).$descriptionlink.']]></description>'."\n</item>\n";
         $i++;
     }
-    echo '</channel></rss><!-- Cached version of '.pageUrl().' -->';
+    echo '</channel></rss><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
 
     $cache->cache(ob_get_contents());
     ob_end_flush();
@@ -936,7 +963,7 @@ function showRSS()
 }
 
 // ------------------------------------------------------------------------------------------
-// Ouput the last 50 links in ATOM format.
+// Ouput the last N links in ATOM format.
 function showATOM()
 {
     header('Content-Type: application/atom+xml; charset=utf-8');
@@ -959,13 +986,18 @@ function showATOM()
     if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
     elseif (!empty($_GET['searchtags']))   $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
     else $linksToDisplay = $LINKSDB;
+    $nblinksToDisplay = 50;  // Number of links to display.
+    if (!empty($_GET['nb']))  // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
+    { 
+        $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max($_GET['nb']+0,1) ;
+    }
 
     $pageaddr=htmlspecialchars(indexUrl());
     $latestDate = '';
     $entries='';
     $i=0;
     $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; }  // No, I can't use array_keys().
-    while ($i<50 && $i<count($keys))
+    while ($i<$nblinksToDisplay && $i<count($keys))
     {
         $link = $linksToDisplay[$keys[$i]];
         $guid = $pageaddr.'?'.smallHash($link['linkdate']);
@@ -1008,7 +1040,7 @@ function showATOM()
     $feed.='<author><name>'.htmlspecialchars($pageaddr).'</name><uri>'.htmlspecialchars($pageaddr).'</uri></author>';
     $feed.='<id>'.htmlspecialchars($pageaddr).'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
     $feed.=$entries;
-    $feed.='</feed><!-- Cached version of '.pageUrl().' -->';
+    $feed.='</feed><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
     echo $feed;
 
     $cache->cache(ob_get_contents());
@@ -1085,7 +1117,7 @@ function showDailyRSS()
         echo '<description><![CDATA['.$html.']]></description>'."\n</item>\n\n";
 
     }
-    echo '</channel></rss><!-- Cached version of '.pageUrl().' -->';
+    echo '</channel></rss><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
 
     $cache->cache(ob_get_contents());
     ob_end_flush();
@@ -1270,7 +1302,7 @@ function renderPage()
         if (is_numeric($_GET['linksperpage'])) { $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage'])); }
         // Make sure the referer is from Shaarli itself.
         $referer = '?';
-        if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['SERVER_NAME'])==0)
+        if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['HTTP_HOST'])==0)
             $referer = $_SERVER['HTTP_REFERER'];
         header('Location: '.$referer);
         exit;
@@ -1289,7 +1321,7 @@ function renderPage()
         }
         // Make sure the referer is from Shaarli itself.
         $referer = '?';
-        if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['SERVER_NAME'])==0)
+        if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_HOST),$_SERVER['HTTP_HOST'])==0)
             $referer = $_SERVER['HTTP_REFERER'];
         header('Location: '.$referer);
         exit;
@@ -1529,18 +1561,41 @@ function renderPage()
             $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;
+            $description = (empty($_GET['description']) ? '' : $_GET['description']); // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
+            $tags = (empty($_GET['tags']) ? '' : $_GET['tags'] ); // Get tags if it was provided in URL
+            $private = (!empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0); // Get private if it was provided in URL 
             if (($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) <head> in html
-                if (strpos($status,'200 OK')!==false) $title=html_entity_decode(html_extract_title($data),ENT_QUOTES,'UTF-8');
-
+                if (strpos($status,'200 OK')!==false)
+ 					 {
+                        // Look for charset in html header.
+ 						preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
+ 
+ 						// If found, extract encoding.
+ 						if (!empty($meta[0]))
+ 						{
+ 							// Get encoding specified in header.
+ 							preg_match('#charset="?(.*)"#si', $meta[0], $enc);
+ 							// If charset not found, use utf-8.
+							$html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
+ 						}
+ 						else { $html_charset = 'utf-8'; }
+ 
+ 						// Extract title
+ 						$title = html_extract_title($data);
+ 						if (!empty($title))
+ 						{
+ 							// Re-encode title in utf-8 if necessary.
+ 							$title = ($html_charset == 'iso-8859-1') ? utf8_encode($title) : $title;
+ 						}
+ 					}
             }
             if ($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);
+            $link = array('linkdate'=>$linkdate,'title'=>$title,'url'=>$url,'description'=>$description,'tags'=>$tags,'private'=>$private);
         }
 
         $PAGE = new pageBuilder;
@@ -1665,7 +1720,11 @@ function importFile()
                 {
                     $attr=$m[1]; $value=$m[2];
                     if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
-                    elseif ($attr=='ADD_DATE') $raw_add_date=intval($value);
+                    elseif ($attr=='ADD_DATE')
+                    {
+                        $raw_add_date=intval($value);
+                        if ($raw_add_date>30000000000) $raw_add_date/=1000;	//If larger than year 2920, then was likely stored in milliseconds instead of seconds
+                    }
                     elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
                     elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
                 }
@@ -1701,11 +1760,11 @@ function importFile()
         }
         $LINKSDB->savedb();
 
-        echo '<script language="JavaScript">alert("File '.$filename.' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
+        echo '<script language="JavaScript">alert("File '.json_encode($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>';
+        echo '<script language="JavaScript">alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
     }
 }
 
@@ -1976,7 +2035,6 @@ function lazyThumbnail($url,$href=false)
     else
         $html.='<img class="lazyimage" src="#" data-original="'.htmlspecialchars($t['src']).'"';
 
-    $html.='<img class="lazyimage" src="#" data-original="'.htmlspecialchars($t['src']).'"';
     if (!empty($t['width']))  $html.=' width="'.htmlspecialchars($t['width']).'"';
     if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
     if (!empty($t['style']))  $html.=' style="'.htmlspecialchars($t['style']).'"';
@@ -2001,7 +2059,7 @@ function lazyThumbnail($url,$href=false)
 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($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
+    if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
 
 
     // This part makes sure sessions works correctly.
@@ -2114,7 +2172,42 @@ function isTZvalid($continent,$city)
     }
     return false;
 }
-
+if (!function_exists('json_encode')) {
+    function json_encode($data) {
+        switch ($type = gettype($data)) {
+            case 'NULL':
+                return 'null';
+            case 'boolean':
+                return ($data ? 'true' : 'false');
+            case 'integer':
+            case 'double':
+            case 'float':
+                return $data;
+            case 'string':
+                return '"' . addslashes($data) . '"';
+            case 'object':
+                $data = get_object_vars($data);
+            case 'array':
+                $output_index_count = 0;
+                $output_indexed = array();
+                $output_associative = array();
+                foreach ($data as $key => $value) {
+                    $output_indexed[] = json_encode($value);
+                    $output_associative[] = json_encode($key) . ':' . json_encode($value);
+                    if ($output_index_count !== NULL && $output_index_count++ !== $key) {
+                        $output_index_count = NULL;
+                    }
+                }
+                if ($output_index_count !== NULL) {
+                    return '[' . implode(',', $output_indexed) . ']';
+                } else {
+                    return '{' . implode(',', $output_associative) . '}';
+                }
+            default:
+                return ''; // Not supported
+        }
+    }
+}
 
 // Webservices (for use with jQuery/jQueryUI)
 // eg.  index.php?ws=tags&term=minecr
@@ -2411,4 +2504,4 @@ if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=d
 if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'ws=')) { processWS(); exit; } // Webservices (for jQuery/jQueryUI)
 if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
 renderPage();
-?>
\ No newline at end of file
+?>