#!/usr/bin/env python
# $Id$
#
# Helper script to load existing data from csv into the Django DB.
# Primarly useful for the initial load, as the GUI does not sync changes
# made directly to the csv files back into the database.
#
# This script should be run from the directory containing the myrpki.conf
# for the handle you are loading data
#

import os
import csv
import socket # for socket.error

import rpki
import rpki.resource_set
import rpki.ipaddrs
from rpki.myrpki import csv_reader

from rpkigui.myrpki import models
from rpkigui.myrpki.views import update_roas
from rpkigui.myrpki.asnset import asnset

cfg_file = os.getenv("MYRPKI_CONF", "myrpki.conf")
cfg = rpki.config.parser(cfg_file, "myrpki")
handle = cfg.get('handle')
asn_csv = cfg.get('asn_csv')
prefix_csv = cfg.get('prefix_csv')
roa_csv = cfg.get('roa_csv')

print 'processing csv files for resource handle', handle

conf = models.Conf.objects.get(handle=handle)

for child_handle, asn in csv_reader(asn_csv, columns=2):
    child = conf.children.get(handle=child_handle)
    asn = models.Asn.objects.get(lo=asn, hi=asn,
            from_cert__parent__in=conf.parents.all())
    child.asn.add(asn)

for child_handle, prefix in csv_reader(prefix_csv, columns=2):
    child = conf.children.get(handle=child_handle)
    try:
        rs = rpki.resource_set.resource_range_ipv4.from_str(prefix)
    except socket.error:
        rs = rpki.resource_set.resource_range_ipv6.from_str(prefix)
    obj = models.AddressRange.objects.get(lo=str(rs.min), hi=str(rs.max),
            from_cert__parent__in=conf.parents.all())
    child.address_range.add(obj)

for prefix, asn, group in csv_reader(roa_csv, columns=3):
    try:
        rs = rpki.resource_set.roa_prefix_set_ipv4().parse_str(prefix)
    except socket.error:
        rs = rpki.resource_set.roa_prefix_set_ipv6().parse_str(prefix)

    if rs.prefixlen != rs.max_prefixlen:
        raise ValueError, \
                "%s: max prefixlen larger than prefixlen is not currently supported." % (prefix,)

    print str(rs.min()), str(rs.max())
    obj = models.AddressRange.objects.get(lo=str(rs.min()), hi=str(rs.max()),
            from_cert__parent__in=conf.parents.all())
    roa_asns = asnset(obj.asns)
    asid = int(asn)
    if asid not in roa_asns:
        roa_asns.add(asid)
        obj.asns = str(roa_asns)
        obj.save()
        update_roas(conf, obj)