Implement generation of pre-signed object URLs using the expiration s…

…etting.

Fixes #1.

libraries/Omeka/Storage/Adapter/AmazonS3.php

@@ -76,7 +76,6 @@ public function store($source, $dest)
         $result = $this->_s3->putObject([
             'ACL' => $this->_getAcl(),
             'Bucket' => $this->_getBucket(),
-            'Expiration' => $this->_getExpiration(),
             'SourceFile' => $source,
             'Key' => $dest
         ]);
@@ -127,6 +126,17 @@ public function delete($path)
      */
     public function getUri($path)
     {
+        if ($expiration = $this->_getExpiration()) {
+            $cmd = $this->_s3->getCommand('GetObject', [
+                'Bucket' => $this->_getBucket(),
+                'Key' => $path
+            ]);
+            $request = $this->_s3->createPresignedRequest($cmd, "+$expiration minutes");
+            $uri = (string)$request->getUri();
+            debug("Omeka_Storage_Adapter_AmazonS3: generating URI to expire in $expiration minutes: $uri");
+            return $uri;
+        }
+
         return $this->_s3->getObjectUrl($this->_getBucket(), $path);
     }
 

plugin.ini

@@ -1,9 +1,9 @@
 [info]
-name="AmazonS3StorageAdapter"
+name="Amazon S3 Storage Adapter"
 author="EHRI"
 description="Storage adapter for Amazon S3 based on the official AWS SDK."
-link="https://github.com/EHRI/omeka-storage-adapter-amazon-s3"
+link="https://github.com/EHRI/omeka-amazon-s3-storage-adapter"
 license="European Union Public Licence (EUPL) v1.1"
 omeka_minimum_version="2.0"
 omeka_target_version="2.4"
-version="0.1"
+version="0.2"