#!/usr/bin/env python
# vim:ts=2:et:sw=2:ai
#
# Build topological network graph
# Rick van der Zwet <info@rickvanderzwet.nl>
import gformat
import sys

__version__ = '$Id: syntax-checker.py 10376 2012-04-07 11:46:13Z rick $'

allowed_multi_use = ['0.0.0.0', '192.168.1.100']

def check_double_ip():
  pool = {}
  try:
    for host in gformat.get_hostlist():
      print "## Processing host %-20s: " % host,
      datadump = gformat.get_yaml(host)
      iface_keys = [elem for elem in datadump.keys() if (elem.startswith('iface_') and not "lo0" in elem)]
      for iface_key in iface_keys:
        l = datadump[iface_key]['ip']
        addr, mask = l.split('/')

        label = "%s - %s" % (host, iface_key)
        if pool.has_key(addr): 
          pool[addr] += [label]
        else: 
          pool[addr] = [label]
      print "OK"
  except (KeyError, ValueError), e:
    print "[ERROR] in '%s' interface '%s'" % (host,iface_key) 
    print e
    sys.exit(1)

  error = False
  for addr,leden in pool.iteritems():
    if len(leden) > 1:
      if not addr in allowed_multi_use:
        print "[ERROR] Multiple usages of IP %s:" % (addr)
        print "  -", "\n  - ".join(leden)
        error = True

  if error:
    print "# Errors found"
    return 1
  else:
    print "# No multiple usages of IPs found"
    return 0


if __name__ == "__main__":
  sys.exit(check_double_ip())