[ckan#77] Use auth_allow_anonymous_access decorator

Starting from 2.2 you need to explicitly flag auth functions that
allow anonymous access with the p.toolkit.auth_allow_anonymous_access
decorator. A local version of the decorator is used to ensure we only
use it on CKAN>=2.2

ckanext/harvest/logic/auth/get.py

@@ -3,6 +3,19 @@
 from ckanext.harvest.logic.auth import get_job_object
 
 
+
+def auth_allow_anonymous_access(auth_function):
+    '''
+        Local version of the auth_allow_anonymous_access decorator that only
+        calls the actual toolkit decorator if the CKAN version supports it
+    '''
+    if pt.check_ckan_version(min_version='2.2'):
+        auth_function = pt.auth_allow_anonymous_access(auth_function)
+
+    return auth_function
+
+
+@auth_allow_anonymous_access
 def harvest_source_show(context, data_dict):
     '''
         Authorization check for getting the details of a harvest source
@@ -29,6 +42,7 @@ def harvest_source_show(context, data_dict):
                 'msg': pt._('User {0} not authorized to read harvest source {1}')
                 .format(user, source_id)}
 
+@auth_allow_anonymous_access
 def harvest_source_show_status(context, data_dict):
     '''
         Authorization check for getting the status of a harvest source
@@ -37,6 +51,7 @@ def harvest_source_show_status(context, data_dict):
     '''
     return harvest_source_show(context, data_dict)
 
+@auth_allow_anonymous_access
 def harvest_source_list(context, data_dict):
     '''
         Authorization check for getting a list of harveste sources
@@ -91,6 +106,7 @@ def harvest_job_list(context, data_dict):
 
 
 
+@auth_allow_anonymous_access
 def harvest_object_show(context, data_dict):
     '''
         Authorization check for getting the contents of a harvest object
@@ -107,6 +123,7 @@ def harvest_object_list(context, data_dict):
     return {'success': True}
 
 
+@auth_allow_anonymous_access
 def harvesters_info_show(context, data_dict):
     '''
         Authorization check for getting information about the available

ckanext/harvest/plugin.py

@@ -84,7 +84,7 @@ def after_show(self, context, data_dict):
                 log.error('Harvest source not found for dataset {0}'.format(data_dict['id']))
                 return data_dict
 
-            data_dict['status'] = harvest_logic.action.get.harvest_source_show_status(context, {'id': source.id})
+            data_dict['status'] = p.toolkit.get_action('harvest_source_show_status')(context, {'id': source.id})
 
         elif not 'type' in data_dict or data_dict['type'] != DATASET_TYPE_NAME:
             # This is a normal dataset, check if it was harvested and if so, add