allow files size up to 2^53 to be read

lib/api/readfile.js

@@ -38,7 +38,7 @@ module.exports = function(filename, options, cb){
         ;
       // get file length
       for(var i=0;i<file.EndofFile.length;i++){
-        fileLength |= file.EndofFile[i] << (i*8);
+        fileLength += file.EndofFile[i] * Math.pow(2, i * 8);
       }
       var result = new Buffer(fileLength);
       // callback manager

lib/api/src/createReadStream.js

@@ -24,7 +24,7 @@ class SmbReadableStream extends Readable {
 
     let fileLength = 0
     for (let i = 0; i < file.EndofFile.length; i++) {
-      fileLength |= file.EndofFile[i] << (i * 8)
+      fileLength += file.EndofFile[i] * Math.pow(2, i * 8);
     }
     this.fileLength = fileLength
     this.wait = false