Bug fixes and cleanups

[sfa.git] / sfatables / commands / Add.py

diff --git a/sfatables/commands/Add.py b/sfatables/commands/Add.py
index d8bd9a7..c6f89a8 100644 (file)
--- a/sfatables/commands/Add.py
+++ b/sfatables/commands/Add.py
@@ -1,16 +1,70 @@
 import os, time
+import libxml2
 from sfatables.command import Command
+from sfatables.globals import *
 
 class Add(Command):
-    options = [('-A','--add')]
-    help = 'Add a rule to a chain'
-    matches = True
-    targets = True
-
     def __init__(self):
+        self.options = [('-A','--add')]
+        self.help = 'Add a rule to a chain'
+        self.matches = True
+        self.targets = True
         return
 
-    def call(self, command_options, match_options, target_options):
-        # Override this function
+    def getnextfilename(self,type,chain):
+        dir = sfatables_config + "/"+chain;
+        last_rule_number = 0
+
+        for (root, dirs, files) in os.walk(dir):
+            for file in files:
+                if (file.startswith('sfatables-') and file.endswith(type)):
+                    number_str = file.split('-')[1]
+                    number = int(number_str)
+                    if (number>last_rule_number):
+                        last_rule_number = number
+
+        return "sfatables-%d-%s"%(last_rule_number+1,type)
+
+    def call_gen(self, chain, type, dir, options):
+        filename = os.path.join(dir, options.name+".xml")
+        xmldoc = libxml2.parseFile(filename)
+    
+        p = xmldoc.xpathNewContext()
+
+        supplied_arguments = options.arguments
+        if (hasattr(options,'element') and options.element):
+            element = options.element
+        else:
+            element='*'
+
+        for option in supplied_arguments:
+            option_name = option['name']
+            option_value = getattr(options,option_name)
+
+            if (hasattr(options,option_name)):
+                context = p.xpathEval("//rule[@element='%s' or @element='*']/argument[name='%s']"%(element, option_name))
+                if (not context):
+                    raise Exception('Unknown option %s for match %s and element %s'%(option,option['name'], element))
+                else:
+                    # Add the value of option
+                    valueNode = libxml2.newNode('value')
+                    valueNode.addContent(option_value)
+                    context[0].addChild(valueNode)
+
+        filename = self.getnextfilename(type,chain)
+        file_path = os.path.join(sfatables_config, chain, filename)
+        if not os.path.isdir(os.path.dirname(file_path)):
+            os.makedirs(os.path.dirname(file_path))
+        xmldoc.saveFile(file_path)
+        p.xpathFreeContext()
+        xmldoc.freeDoc()
+
         return True
 
+    def call(self, command_options, match_options, target_options):
+        chain = command_options.args[0]
+        ret = self.call_gen(chain, 'match',match_dir, match_options)
+        if (ret):
+            ret = self.call_gen(chain, 'target',target_dir, target_options)
+
+        return ret