From 89f79727bea28177b92fb0b673650b98cf96b4ca Mon Sep 17 00:00:00 2001
From: Jose Ignacio Andres <joserobleda@gmail.com>
Date: Tue, 9 Jul 2013 00:38:18 +0200
Subject: [PATCH] prevent inherited properties using hasOwnProperty

---
 lib/oauth.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/oauth.js b/lib/oauth.js
index 7607ee61..44dcf7f8 100644
--- a/lib/oauth.js
+++ b/lib/oauth.js
@@ -133,6 +133,7 @@ exports.OAuth.prototype._buildAuthorizationHeaders= function(orderedParameters)
 exports.OAuth.prototype._makeArrayOfArgumentsHash= function(argumentsHash) {
   var argument_pairs= [];
   for(var key in argumentsHash ) {
+    if (argumentsHash.hasOwnProperty(key)) {
        var value= argumentsHash[key];
        if( Array.isArray(value) ) {
          for(var i=0;i<value.length;i++) {
@@ -142,6 +143,7 @@ exports.OAuth.prototype._makeArrayOfArgumentsHash= function(argumentsHash) {
        else {
          argument_pairs[argument_pairs.length]= [key, value];
        }
+    }
   }
   return argument_pairs;  
 } 
@@ -263,7 +265,7 @@ exports.OAuth.prototype._prepareParameters= function( oauth_token, oauth_token_s
   else {
     if( extra_params ) {
       for( var key in extra_params ) {
-           oauthParameters[key]= extra_params[key];
+        if (extra_params.hasOwnProperty(key)) oauthParameters[key]= extra_params[key];
       }
     }
     var parsedUrl= URL.parse( url, false );