Added: Support for TED Talks (ted.com/talks) thumbnails

diff --git a/index.php b/index.php
index 88be084bd1e8c9cb90969a3b732ec73ce94437af..d9692927ca292f41a43323ab6713b732b633a7df 100644 (file)
--- a/index.php
+++ b/index.php
@@ -1515,13 +1515,21 @@ function thumbnail($url,$href=false)
     
     if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return ''; // If local cache is disabled, no thumbnails for services which require the use a local cache.
     
-    if ($domain=='flickr.com' || endsWith($domain,'.flickr.com') || $domain=='vimeo.com')
+    if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
+        || $domain=='vimeo.com'
+        || $domain=='ted.com' || endsWith($domain,'.ted.com')
+    )
     {
        if ($domain=='vimeo.com')
        {   // Make sure this vimeo url points to a video (/xxx... where xxx is numeric)
                $path = parse_url($url,PHP_URL_PATH); 
                if (!preg_match('!/\d+.+?!',$path)) return ''; // This is not a single video URL.
        }
+       if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
+       {   // Make sure this TED url points to a video (/talks/...)
+               $path = parse_url($url,PHP_URL_PATH);
+               if ("/talks/" !== substr($path,0,7)) return ''; // This is not a single video URL.
+       }
         $sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
         return '<a href="'.htmlspecialchars($href).'"><img src="?do=genthumbnail&hmac='.htmlspecialchars($sign).'&url='.urlencode($url).'" width="120" style="height:auto;"></a>';
     }
@@ -1881,6 +1889,35 @@ function genThumbnail()
             }           
         }  
     }
+
+    if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
+    {
+        // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
+        // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
+        // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
+        list($httpstatus,$headers,$data) = getHTTP($url,5);
+        if (strpos($httpstatus,'200 OK')!==false)
+        {
+            // Extract the link to the thumbnail
+            preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)[^s]!',$data,$matches);
+            if (!empty($matches[1]))
+            {   // Let's download the image.
+                $imageurl=$matches[1];
+                list($httpstatus,$headers,$data) = getHTTP($imageurl,20); // No control on image size, so wait long enough.
+                if (strpos($httpstatus,'200 OK')!==false)
+                {
+                    $filepath=$GLOBALS['config']['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;
+                    }
+                }
+            }
+        }
+    }
     
     // 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)
@@ -1950,4 +1987,4 @@ if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['c
 if (startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
 if (startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
 renderPage();
-?>
\ No newline at end of file
+?>