restructuring of the whole code basis

WebKit/scripts/helper/Hmac.js

@@ -0,0 +1,56 @@
+define([
+    "lib/URI",
+    "lib/CryptoJS"
+],
+
+function(URI, CryptoJS) {
+
+    var Hmac = {};
+
+    Hmac.makeAuthHeader = function(url, http_method, mac_key, mac_key_id) {
+
+        url = URI(url);
+        var nonce = Hmac.makeid(8);
+        var time_stamp = parseInt((new Date).getTime() / 1000, 10);
+
+        var port = url.port();
+        if (!port) {
+            port = url.protocol() == "https" ? "443" : "80";
+        }
+
+        var normalizedRequestString = "" 
+                                    + time_stamp + '\n'
+                                    + nonce + '\n'
+                                    + http_method + '\n'
+                                    + url.path() + url.search() + url.hash() + '\n'
+                                    + url.hostname() + '\n'
+                                    + port + '\n'
+                                    + '\n' ;
+
+        var hmac = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, mac_key);
+        hmac.update(normalizedRequestString);
+        var hash = hmac.finalize();
+        var mac = hash.toString(CryptoJS.enc.Base64);
+
+        return 'MAC id="' + mac_key_id +
+                '", ts="' + time_stamp +
+                '", nonce="' + nonce +
+                '", mac="' + mac + '"';
+    }
+
+    Hmac.makeid = function(len) {
+        var text = "";
+        var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+        for( var i=0; i < len; i++ )
+            text += possible.charAt(Math.floor(Math.random() * possible.length));
+
+        return text;
+    }
+
+    return Hmac;
+});
+
+// its different for app authentication and user authentication:
+// for apps its id: mac_key_id and secret: mac_key,
+// for users its id: access_token and secret:mac_key