binder/binder/models.py

70 lines
2.9 KiB
Python

from BeautifulSoup import BeautifulStoneSoup as BS
from django.db import models
import dns.query
import dns.zone
import re
import urllib2
TSIG_ALGORITHMS = (('hmac-md5', 'MD5'),('hmac-sha1', 'SHA1'),('hmac-224', 'SHA224'),('hmac-sha256', 'SHA256'),('hmac-sha384', 'SHA384'),('hmac-sha512', 'SHA512'))
class BindServer(models.Model):
hostname = models.CharField(max_length=100)
statistics_port = models.IntegerField()
control_port = models.IntegerField()
def __unicode__(self):
return self.hostname
def list_zones(self):
""" Take a DNS server, and list the DNS zones it provides resolution for. """
# I should take the dns_hostname here, get the object from the DB,
# and use the status port attribute for the urllib2 query.
myreq = urllib2.Request("http://%s:%s" % (self.hostname, self.statistics_port))
try:
http_request = urllib2.urlopen(myreq)
except urllib2.URLError, err_reason: # Error retrieving zone list.
return { 'errors' : "Trying to retrieve zone list from %s: %s" % (self.hostname, err_reason) }
return_array = []
xmloutput = http_request.read()
mysoup = BS(xmloutput)
zones = mysoup.findAll('zone')
for current_zone in zones: # Interate over found zones
zone_name = current_zone.find("name").string.split("/IN")[0]
zone_serial = current_zone.find("serial").string
zone_class = current_zone.find("rdataclass").string
if zone_class == "IN":
return_array.append({"zone_name" : zone_name, "zone_serial" : zone_serial })
return return_array
def list_zone_records(self, zone):
"""Given a zone, produce an array of dicts containing
each RR record and its attributes."""
try:
zone = dns.zone.from_xfr(dns.query.xfr(self.hostname, zone))
except dns.exception.FormError, err:
raise Exception("The zone requested %s is not found on %s." % (zone, self.hostname))
names = zone.nodes.keys()
names.sort()
record_array = []
for current_name in names:
current_record = zone[current_name].to_text(current_name)
for split_record in current_record.split("\n"): # Split the records on the newline
record_array.append({'rr_name' : split_record.split(" ")[0],
'rr_ttl' : split_record.split(" ")[1],
'rr_class' : split_record.split(" ")[2],
'rr_type' : split_record.split(" ")[3],
'rr_data' : split_record.split(" ")[4]})
return record_array
class Key(models.Model):
name = models.CharField(max_length=50)
data = models.CharField(max_length=150)
algorithm = models.CharField(max_length=200, choices=TSIG_ALGORITHMS)
def __unicode__(self):
return self.name