Update the history when a paste is created

Fixes https://github.com/PrivateBin/PrivateBin/issues/167

js/privatebin.js

@@ -1118,6 +1118,7 @@ jQuery.PrivateBin = function($, sjcl, Base64, RawDeflate) {
                         var deleteUrl = controller.scriptLocation() + '?pasteid=' + data.id + '&deletetoken=' + data.deletetoken;
                         controller.showStatus('');
                         controller.errorMessage.addClass('hidden');
+                        history.pushState({type: 'newpaste'}, '', url);
 
                         $('#pastelink').html(
                             i18n._(
@@ -1152,6 +1153,26 @@ jQuery.PrivateBin = function($, sjcl, Base64, RawDeflate) {
             });
         },
 
+        /**
+         * handle history (pop) state changes
+         *
+         * currently this does only handle redirects to the home page.
+         *
+         * @name   controller.historyChange
+         * @function
+         * @param  {Event} event
+         */
+        historyChange: function(event)
+        {
+            if (event.originalEvent.state === null && // no state object passed
+                this.scriptLocation() === event.originalEvent.target.location.href && // target location is home page
+                this.scriptLocation() === window.location.href // and we are not already on the home page
+            ) {
+                // redirect to home page
+                window.location.href = this.scriptLocation();
+            }
+        },
+
         /**
          * check if a URL shortener was defined and create HTML containing a link to it
          *
@@ -1619,6 +1640,8 @@ jQuery.PrivateBin = function($, sjcl, Base64, RawDeflate) {
             this.passwordModal.on('shown.bs.modal', $.proxy(this.passwordDecrypt.focus, this));
             this.passwordModal.on('hidden.bs.modal', $.proxy(this.decryptPasswordModal, this));
             this.passwordForm.submit($.proxy(this.submitPasswordModal, this));
+
+            $(window).on('popstate', $.proxy(this.historyChange, this));
         },
 
         /**

tpl/bootstrap.php

@@ -69,7 +69,7 @@ if ($MARKDOWN):
 <?php
 endif;
 ?>
-		<script type="text/javascript" src="js/privatebin.js?<?php echo rawurlencode($VERSION); ?>" integrity="sha512-YW9b0ChcI/zuJwUZxdQW3zb/LO999he3fOtiio2MhickC7YyrzgvIcgvFMUYZjJ79tYiNzDLmMAZKRMvqoQoGw==" crossorigin="anonymous"></script>
+		<script type="text/javascript" src="js/privatebin.js?<?php echo rawurlencode($VERSION); ?>" crossorigin="anonymous"></script>
 		<!--[if lt IE 10]>
 		<style type="text/css">body {padding-left:60px;padding-right:60px;} #ienotice {display:block;} #oldienotice {display:block;}</style>
 		<![endif]-->