diff --git a/js/app/controllers/share.js b/js/app/controllers/share.js
index c809eebe..bc0aec32 100644
--- a/js/app/controllers/share.js
+++ b/js/app/controllers/share.js
@@ -6,6 +6,7 @@
  * @description
  * # MainCtrl
  * Controller of the passmanApp
+ * This file is part of passman, licensed under AGPLv3
  */
 angular.module('passmanApp')
 	.controller('ShareCtrl', ['$scope', 'VaultService', 'CredentialService', 'SettingsService', '$location', '$routeParams', 'ShareService', function ($scope, VaultService, CredentialService, SettingsService, $location, $routeParams, ShareService) {
diff --git a/js/app/factory/sharingacl.js b/js/app/factory/sharingacl.js
new file mode 100644
index 00000000..234300ae
--- /dev/null
+++ b/js/app/factory/sharingacl.js
@@ -0,0 +1,42 @@
+/**
+ * Created by Marcos Zuriaga on 3/10/16.
+ * This file is part of passman, licensed under AGPLv3
+ */
+
+angular.module('passmanApp').factory('SharingACL', function(){
+    function ACL(acl_permission){
+        var permission = acl_permission;
+        var permissions = {
+            READ: 0x01,
+            WRITE: 0x03,
+            OWNER: 0x80,
+        };
+    }
+
+    /**
+     * Checks if a user has the given permission/s
+     * @param permission
+     * @returns {boolean}
+     */
+    ACL.prototype.hasPermission = function(permission){
+        return this.permission == (this.permission & permission);
+    };
+
+    /**
+     * Adds a permission to a user, leaving any other permissions intact
+     * @param permission
+     */
+    ACL.prototype.addPermission = function(permission){
+        this.permission = this.permission | permission;
+    };
+
+    /**
+     * Removes a given permission from the item, leaving any other intact
+     * @param permission
+     */
+    ACL.prototype.removePermission = function(permission){
+        this.permission = this.permission & !permission;
+    };
+
+    return ACL;
+});
\ No newline at end of file
diff --git a/js/app/services/shareservice.js b/js/app/services/shareservice.js
index 2cef04f8..3e3931d7 100644
--- a/js/app/services/shareservice.js
+++ b/js/app/services/shareservice.js
@@ -6,6 +6,7 @@
  * @description
  * # ShareService
  * Service in the passmanApp.
+ * This file is part of passman, licensed under AGPLv3
  */
 angular.module('passmanApp')
 	.service('ShareService', ['$http', 'VaultService', 'EncryptService', 'CredentialService', function ($http, VaultService, EncryptService, CredentialService) {
diff --git a/templates/main.php b/templates/main.php
index 85d39334..c38b109a 100644
--- a/templates/main.php
+++ b/templates/main.php
@@ -54,6 +54,7 @@ script('passman', 'app/services/encryptservice');
 script('passman', 'app/services/tagservice');
 script('passman', 'app/services/notificationservice');
 script('passman', 'app/services/shareservice');
+script('passman', 'app/factory/sharingacl');
 script('passman', 'app/directives/passwordgen');
 script('passman', 'app/directives/fileselect');
 script('passman', 'app/directives/progressbar');