add TS API to check current user

lib/galaxy/webapps/tool_shed/api/users.py

@@ -95,12 +95,18 @@ class UsersController( BaseAPIController ):
     def show( self, trans, id, **kwd ):
         """
         GET /api/users/{encoded_user_id}
+        GET /api/users/current
         Returns a dictionary of information about a user.
 
         :param id: the encoded id of the User object.
         """
-        # Example URL: http://localhost:9009/api/users/f9cad7b01a472135
-        user = suc.get_user( trans.app, id )
+        user = None
+        # user is requesting data about themselves
+        if id == "current" and trans.user:
+            user = trans.user
+        else:
+            user = suc.get_user( trans.app, id )
+
         if user is None:
             user_dict = dict( message='Unable to locate user record for id %s.' % ( str( id ) ),
                               status='error' )