8 from optparse import OptionParser
9 from sfatables import commands
10 from sfatables.globals import *
11 from sfatables.commands.List import *
12 from sfatables.xmlrule import *
15 def __init__(self, chain_name):
16 self.active_context = {}
17 self.contexts = None # placeholder for rspec_manger
18 self.sorted_rule_list = []
19 chain_dir_path = os.path.join(sfatables_config,chain_name)
20 rule_list = List().get_rule_list(chain_dir_path)
21 for rule_number in rule_list:
22 self.sorted_rule_list = self.sorted_rule_list + [XMLRule(chain_name, rule_number)]
26 def set_context(self, request_context):
27 self.active_context = request_context
30 def create_xml_node(self, name, context_dict):
31 node = libxml2.newNode(name)
32 for k in context_dict.keys():
33 if (type(context_dict[k])==dict):
34 childNode = self.create_xml_node(k, context_dict[k])
35 node.addChild(childNode)
37 node.addContent(context_dict[k])
40 def add_request_context_to_rspec(self, doc):
41 p = doc.xpathNewContext()
42 context = p.xpathEval("//rspec")
44 raise Exception('Request is not an rspec')
46 # Add the request context
47 requestNode = self.create_xml_node('request-context',self.active_context)
48 context[0].addChild(requestNode)
52 def add_rule_context_to_rspec(self,arguments, doc):
53 p = doc.xpathNewContext()
54 context = p.xpathEval("//rspec")
56 raise Exception('Request is not an rspec')
58 # Add the request context
59 ruleNode = libxml2.newNode('rule-context')
60 ac = self.active_context
62 argumentNode = libxml2.newNode('argument')
63 nameNode = libxml2.newNode('name')
64 nameNode.addContent(k)
65 valueNode = libxml2.newNode('value')
66 valueNode.addContent(ac[k])
67 argumentNode.addChild(nameNode)
68 argumentNode.addChild(valueNode)
69 ruleNode.addChild(argumentNode)
70 context[0].addChild(ruleNode)
75 def apply(self, rspec):
76 doc = libxml2.parseDoc(rspec)
77 doc = self.add_request_context_to_rspec(doc)
79 intermediate_rspec = doc
81 for rule in self.sorted_rule_list:
82 intermediate_rspec = rule.apply_interpreted(intermediate_rspec)
86 final_rspec = XMLRule().wrap_up(intermediate_rspec)
90 incoming = SFATablesRules('INCOMING')
91 incoming.set_context({'sfa':{'user':{'hrn':'plc.princeton.sapanb'}}})
93 outgoing = SFATablesRules('OUTGOING')
94 print "%d rules loaded for INCOMING chain"%len(incoming.sorted_rule_list)
95 print incoming.sorted_rule_list[0].processors
97 print "%d rules loaded for OUTGOING chain"%len(outgoing.sorted_rule_list)
98 print outgoing.sorted_rule_list[0].processors
100 rspec = open(sys.argv[1]).read()
101 newrspec = incoming.apply(rspec)
105 if __name__=="__main__":