check that the chunk is smaller than 5GB, when the size is actually parsed

Author: fredmnl

lib/auth/streamingV4/trailingChecksumTransform.js

@@ -1,5 +1,6 @@
 const { Transform } = require('stream');
 const { errors } = require('arsenal');
+const { maximumAllowedPartSize } = require('../../../constants');
 
 /**
  * This class is designed to handle the chunks sent in a streaming
@@ -103,6 +104,10 @@ class TrailingChecksumTransform extends Transform {
                 // last chunk, no more data to read, the stream is closed
                 this.streamClosed = true;
             }
+            if (dataSize > maximumAllowedPartSize) {
+                this.log.error('chunk size too big', { dataSize });
+                return callback(errors.EntityTooLarge);
+            }
             this.bytesToRead = dataSize;
             this.bytesToDiscard = 2;
         }