Do not include sse configuration of source object in that of the destination object (#3016)

Author: matchbookmac

gems/aws-sdk-s3/CHANGELOG.md

@@ -1,6 +1,8 @@
 Unreleased Changes
 ------------------
 
+* Issue - Fix bug where destination bucket default encryption was inadvertently overridden by source object encryption.
+
 1.149.0 (2024-04-30)
 ------------------
 
@@ -167,7 +169,7 @@ Unreleased Changes
 1.123.2 (2023-06-12)
 ------------------
 
-* Issue - Fix issue when decrypting noncurrent versions of objects when using client side encryption (#2866). 
+* Issue - Fix issue when decrypting noncurrent versions of objects when using client side encryption (#2866).
 
 1.123.1 (2023-06-02)
 ------------------

gems/aws-sdk-s3/lib/aws-sdk-s3/object_multipart_copier.rb

@@ -138,9 +138,7 @@ def source_has_parts(options)
       end
 
       def source_metadata(options)
-        if options[:content_length]
-          return { content_length: options.delete(:content_length) }
-        end
+        return options.slice(:content_length) if options[:content_length]
 
         client = options[:copy_source_client] || @client
 
@@ -150,11 +148,15 @@ def source_metadata(options)
           bucket, key = options[:copy_source].match(/([^\/]+?)\/(.+)/)[1,2]
         end
 
-        key = CGI.unescape(key)
-        opts = { bucket: bucket, key: key }
-        opts[:version_id] = version_id if version_id
-        opts[:part_number] = options[:part_number] if options[:part_number]
-        client.head_object(opts).to_h
+        head_opts = { bucket: bucket, key: CGI.unescape(key) }.tap { |opts|
+          opts[:version_id]  = version_id if version_id
+          opts[:part_number] = options[:part_number] if options[:part_number]
+        }
+
+        client.head_object(head_opts).to_h.tap { |head|
+          head.delete(:server_side_encryption)
+          head.delete(:ssekms_key_id)
+        }
       end
 
       def default_part_size(source_size)