self.active_context = {}
self.contexts = None # placeholder for rspec_manger
self.sorted_rule_list = []
+ self.final_processor = '__sfatables_wrap_up__.xsl'
chain_dir_path = os.path.join(sfatables_config,chain_name)
rule_list = List().get_rule_list(chain_dir_path)
for rule_number in rule_list:
self.sorted_rule_list = self.sorted_rule_list + [XMLRule(chain_name, rule_number)]
return
+ def wrap_up(self, doc):
+ filepath = os.path.join(sfatables_config, 'processors', self.final_processor)
+
+ if not os.path.exists(filepath):
+ raise Exception('Could not find final rule filter')
+
+ styledoc = libxml2.parseFile(filepath)
+ style = libxslt.parseStylesheetDoc(styledoc)
+ result = style.applyStylesheet(doc, None)
+ stylesheet_result = style.saveResultToString(result)
+ style.freeStylesheet()
+ doc.freeDoc()
+ result.freeDoc()
+
+ return stylesheet_result
def set_context(self, request_context):
self.active_context = request_context
childNode = self.create_xml_node(k, context_dict[k])
node.addChild(childNode)
else:
- node.addContent(context_dict[k])
+ childNode = libxml2.newNode(k)
+ childNode.addContent(context_dict[k])
+ node.addChild(childNode)
return node
def add_request_context_to_rspec(self, doc):
p = doc.xpathNewContext()
- context = p.xpathEval("//rspec")
+ context = p.xpathEval("//RSpec")
if (not context):
raise Exception('Request is not an rspec')
else:
p.xpathFreeContext()
return doc
- def add_rule_context_to_rspec(self,arguments, doc):
- p = doc.xpathNewContext()
- context = p.xpathEval("//rspec")
- if (not context):
- raise Exception('Request is not an rspec')
- else:
- # Add the request context
- ruleNode = libxml2.newNode('rule-context')
- ac = self.active_context
- for k in ac:
- argumentNode = libxml2.newNode('argument')
- nameNode = libxml2.newNode('name')
- nameNode.addContent(k)
- valueNode = libxml2.newNode('value')
- valueNode.addContent(ac[k])
- argumentNode.addChild(nameNode)
- argumentNode.addChild(valueNode)
- ruleNode.addChild(argumentNode)
- context[0].addChild(ruleNode)
- p.xpathFreeContext()
-
- return doc
-
+
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:
+ (matched,intermediate_rspec) = rule.apply_interpreted(intermediate_rspec)
+ if (rule.terminal and matched):
+ break
+
+ final_rspec = self.wrap_up(intermediate_rspec)
+ else:
+ final_rspec = rspec
- final_rspec = XMLRule().wrap_up(intermediate_rspec)
return final_rspec
+ def print_rules(self):
+ for rule in self.sorted_rule_list:
+ print rule.processors
+
def main():
incoming = SFATablesRules('INCOMING')
incoming.set_context({'sfa':{'user':{'hrn':'plc.princeton.sapanb'}}})
outgoing = SFATablesRules('OUTGOING')
print "%d rules loaded for INCOMING chain"%len(incoming.sorted_rule_list)
- print incoming.sorted_rule_list[0].processors
+ incoming.print_rules()
print "%d rules loaded for OUTGOING chain"%len(outgoing.sorted_rule_list)
- print outgoing.sorted_rule_list[0].processors
+ outgoing.print_rules()
rspec = open(sys.argv[1]).read()
newrspec = incoming.apply(rspec)