Add parameters for specifying length and checksum of files to which l…

…ink points

core/controllers/components/ApisystemComponent.php

@@ -212,6 +212,10 @@ function userApikeyDefault($args)
    * @param itemname (Optional)
             The name of the newly created item, if not supplied, the item will
             have the same name as <b>url</b>.
+   * @param length (Optional)
+            The length in bytes of the file to which the link points.
+   * @param checksum (Optional)
+            The md5 checksum of the file to which the link points.
    * @return The item information of the item created.
    */
   function linkCreate($args)
@@ -244,8 +248,14 @@ function linkCreate($args)
       throw new Exception('Invalid URL', MIDAS_INVALID_PARAMETER);
       }
     $itemname = isset($args['itemname']) ? $args['itemname'] : $args['url'];
+    if(isset($args['length']) && !filter_var($args['length'], FILTER_VALIDATE_INT, array('options' => array('min_range' => 0))))
+      {
+      throw new Exception('Invalid length', MIDAS_INVALID_PARAMETER);
+      }
+    $length = isset($args['length']) ? $args['length'] : 0;
+    $checksum = isset($args['checksum']) ? $args['checksum'] : ' ';
     $uploadComponent = MidasLoader::loadComponent('Upload');
-    $item = $uploadComponent->createLinkItem($userDao, $itemname, $args['url'], $folder);
+    $item = $uploadComponent->createLinkItem($userDao, $itemname, $args['url'], $folder, $length, $checksum);
     if(!$item)
       {
       throw new Exception('Link creation failed', MIDAS_INTERNAL_ERROR);

core/controllers/components/UploadComponent.php

@@ -116,7 +116,7 @@ function uploadBitstream($bitstreamdao, $assetstoredao, $copy = false)
     } // end uploadBitstream()
 
   /** save upload item in the DB */
-  public function createLinkItem($userDao, $name, $url, $parent = null)
+  public function createLinkItem($userDao, $name, $url, $parent = null, $sizebytes = 0, $checksum = ' ')
     {
     $itemModel = MidasLoader::loadModel('Item');
     $feedModel = MidasLoader::loadModel('Feed');
@@ -147,6 +147,7 @@ public function createLinkItem($userDao, $name, $url, $parent = null)
     $item = new ItemDao;
     $item->setName($name);
     $item->setDescription('');
+    $item->setSizebytes($sizebytes);
     $item->setType(0);
     $item->setPrivacyStatus(MIDAS_PRIVACY_PRIVATE); // Must set this flag private initially
     $itemModel->save($item, false);
@@ -173,8 +174,8 @@ public function createLinkItem($userDao, $name, $url, $parent = null)
     $bitstreamDao->setName($url);
     $bitstreamDao->setPath($url);
     $bitstreamDao->setMimetype('url');
-    $bitstreamDao->setSizebytes(0);
-    $bitstreamDao->setChecksum(' ');
+    $bitstreamDao->setSizebytes($sizebytes);
+    $bitstreamDao->setChecksum($checksum);
 
     $assetstoreDao = $assetstoreModel->getDefault();
     $bitstreamDao->setAssetstoreId($assetstoreDao->getKey());