From: Sapan Bhatia <sapanb@cs.princeton.edu>
Date: Mon, 26 Oct 2009 15:44:06 +0000 (+0000)
Subject: Remove all sfatables processing if there are no rules.
X-Git-Tag: sfa-0.9-6~115
X-Git-Url: http://git.onelab.eu/?p=sfa.git;a=commitdiff_plain;h=94cfe1693332964c414a9dff1756150fe8d47839

Remove all sfatables processing if there are no rules.
---

diff --git a/sfatables/runtime.py b/sfatables/runtime.py
index 05e692a6..0c6b8b1c 100644
--- a/sfatables/runtime.py
+++ b/sfatables/runtime.py
@@ -67,17 +67,21 @@ class SFATablesRules:
 
     
     def apply(self, rspec):
-        doc = libxml2.parseDoc(rspec)
-        doc = self.add_request_context_to_rspec(doc)
+        if (self.sorted_rule_list):
+            doc = libxml2.parseDoc(rspec)
+            doc = self.add_request_context_to_rspec(doc)
 
-        intermediate_rspec = doc
+            intermediate_rspec = doc
 
-        for rule in self.sorted_rule_list:
-            intermediate_rspec  = rule.apply_interpreted(intermediate_rspec)
-            if (rule.terminal):
-                break
+            for rule in self.sorted_rule_list:
+                intermediate_rspec  = rule.apply_interpreted(intermediate_rspec)
+                if (rule.terminal):
+                    break
+
+            final_rspec = self.wrap_up(intermediate_rspec) 
+        else:
+            final_rspec = rspec
 
-        final_rspec = self.wrap_up(intermediate_rspec) 
         return final_rspec
 
 def main():