Fix history api URI encoding

The history API encoded components multiple times, e.g. causing a [ to
be converted to %5B in the first link, then to %255B on the second link,
%25255B on the third, etc.

refs #4408

public/js/icinga/util/async.js

@@ -11,13 +11,17 @@
 
         };
 
+        var encodeForURL = function(param) {
+            return encodeURIComponent(param);
+        };
+         
         var getCurrentGETParameters = function() {
             var currentGET = window.location.search.substring(1).split("&");
             var params = {};
             if(currentGET.length > 0) {
                 $.each(currentGET, function(idx, elem) {
                     var keyVal = elem.split("=");
-                    params[encodeURIComponent(keyVal[0])] = encodeURIComponent(keyVal[1]);
+                    params[keyVal[0]] = encodeForURL(keyVal[1]);
                 }); 
             }
             return params;
@@ -26,10 +30,13 @@
         var pushGet = function(param, value, url) {
             url = url || (window.location.origin+window.location.pathname);
             var params = getCurrentGETParameters();
-            params[encodeURIComponent(param)] = encodeURIComponent(value);
+            params[param] = encodeForURL(value);
             var search = "?";
             for (var name in params) {
-                if(search != "?")
+                if (name === "" || typeof params[name] == "undefined") {
+                    continue;
+                }
+                if (search != "?")
                     search += "&";
                 search += name+"="+params[name];
             }
@@ -143,12 +150,11 @@
                     req.destination = destination;
                 }
                 if (destination == "icinga-main") {
-                    History.pushState(data, document.title, url);
+                    history.pushState(data, document.title, url);
                 } else {
                     url = pushGet("c["+destination+"]", url);
-                    History.pushState(data, document.title, url);
+                    history.pushState(data, document.title, url);
                 }
-                console.log("New url: ", url);
                 return req;
             };
             

public/js/main.js

@@ -10,13 +10,14 @@ requirejs.config({
         "raphael.vml": 'vendor/raphael/raphael.vml',
         'ace' : 'vendor/ace/ace',
         "Holder": 'vendor/holder',
+        "History": 'vendor/history',
 
         logging: 'icinga/util/logging'
     }
 
 });
 
-define(['jquery','Holder'], function ($) {
+define(['jquery','Holder', 'History'], function ($) {
     requirejs(['bootstrap']);
     requirejs(['icinga/icinga'], function (Icinga) {
         window.$ = $;

test/frontend/regression/regression-4408.js

@@ -0,0 +1,51 @@
+/**
+*
+*   Regression test for #4408
+#   History api double encodes and causes messy behaviour
+*
+**/
+
+var i2w = require('./i2w-config');
+var casper = i2w.getTestEnv();
+var URL = "http://localhost:12999";
+var firstLink = "/fragments/testFragment1.html?c[test]=test_test";
+var secondLink = "/fragments/testFragment3.html?this=is_a_param";
+casper.start(URL+"/generic.html");
+
+
+casper.then(function() {
+    casper.page.evaluate(i2w.setupRequireJs, {icinga: true});
+});
+
+casper.then(function() {
+    casper.page.evaluate(function() {
+        requirejs(["icinga/icinga"], function(icinga) {
+            icinga.loadUrl("/fragments/testFragment1.html?c[test]=test_test");
+        });
+    });
+    casper.waitForSelector("div#icinga-main a", onFirstCall); 
+ 
+});
+
+/**
+*   First call of the loadUrl
+**/
+var onFirstCall = function() {
+    this.test.assertUrlMatch(URL+firstLink);
+    casper.page.evaluate(function() {
+        requirejs(["icinga/icinga"], function(icinga) {
+            icinga.loadUrl("/fragments/testFragment3.html?this=is_a_param", "icinga-detail");
+        }); 
+    });
+    this.wait(400, function() {
+        var expected =
+            URL +
+            firstLink+"&c[icinga-detail]=" +
+            secondLink;
+        this.test.assertUrlMatch(expected);
+    });
+};
+
+casper.run(function() {
+    this.test.done();
+});