#!/usr/bin/env python

import sys
from xml.dom.minidom import parseString

def parse(file):
    config = {}
    dom = parseString(file)
    section = dom.getElementsByTagName("ns1:PropertySection")[0]
    for property in section.getElementsByTagName("ns1:Property"):
        key   = property.getAttribute("ns1:key")
        value = property.getAttribute("ns1:value")
        config[key] = value
    dom.unlink()
    return config

# Check for argument
try:
    ovf_file = sys.argv[1]
except IndexError:
    print "Supply a file as an argument."
    sys.exit(1)

# Read file
try:
    ovf = open(ovf_file).read()
except IOError:
    print "Unable to read file '%s'." % ovf_file
    sys.exit(1)

# Parse ovf context file
ovf_config = parse(ovf)

# `ovf_config` will be a dictionary, for example:
#{   u'org.linuxdist.x.ExternalGateway': u'84.21.173.254',
#    u'org.linuxdist.x.ExternalIP': u'84.21.173.158',
#    u'org.linuxdist.x.TARGET_CONF': u'hdc',
#    u'org.linuxdist.x.hostname': u'balancer'}

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#                          Insert user script here                             #
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