From 90efc4173df478220f61445c8d787466ad511c3d Mon Sep 17 00:00:00 2001
From: Tim Otten <totten@civicrm.org>
Date: Wed, 18 Feb 2015 21:37:20 -0800
Subject: [PATCH] CRM_Core_Resources - Add API to export permission info

---
 CRM/Core/Resources.php | 23 +++++++++++++++++++++++
 js/Common.js           |  6 ++++++
 2 files changed, 29 insertions(+)

diff --git a/CRM/Core/Resources.php b/CRM/Core/Resources.php
index fae2d0b2c3..b46698fac7 100644
--- a/CRM/Core/Resources.php
+++ b/CRM/Core/Resources.php
@@ -148,6 +148,29 @@ class CRM_Core_Resources {
     );
   }
 
+  /**
+   * Export permission data to the client to enable smarter GUIs.
+   *
+   * Note: Application security stems from the server's enforcement
+   * of the security logic (e.g. in the API permissions). There's no way
+   * the client can use this info to make the app more secure; however,
+   * it can produce a better-tuned (non-broken) UI.
+   *
+   * @param array $permNames
+   *   List of permission names to check/export.
+   * @return CRM_Core_Resources
+   */
+  public function addPermissions($permNames) {
+    $permNames = (array) $permNames;
+    $perms = array();
+    foreach ($permNames as $permName) {
+      $perms[$permName] = CRM_Core_Permission::check($permName);
+    }
+    return $this->addSetting(array(
+      'permissions' => $perms,
+    ));
+  }
+
   /**
    * Add a JavaScript file to the current page using <SCRIPT SRC>.
    *
diff --git a/js/Common.js b/js/Common.js
index bd100e2b33..a03074f495 100644
--- a/js/Common.js
+++ b/js/Common.js
@@ -1311,4 +1311,10 @@ CRM.strings = CRM.strings || {};
       }
     }
   };
+
+  // Determine if a user has a given permission.
+  // @see CRM_Core_Resources::addPermissions
+  CRM.checkPerm = function(perm) {
+    return CRM.permissions[perm];
+  };
 })(jQuery, _);
-- 
2.25.1