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linkchecker/tests/dns/test_zone.py
Bastian Kleineidam 017a1087ba Remove unneeded __future__ import
2010-11-21 10:45:30 +01:00

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Python
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# -*- coding: iso-8859-1 -*-
# Copyright (C) 2003-2007 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
from cStringIO import StringIO
import os
import unittest
import difflib
import linkcheck.dns.exception
import linkcheck.dns.rdata
import linkcheck.dns.rdataclass
import linkcheck.dns.rdatatype
import linkcheck.dns.rrset
import linkcheck.dns.zone
_paths = ["tests", "dns"]
def fname (name, sep=None):
args = tuple(_paths + [name])
if sep is not None:
return sep.join(args)
else:
return os.path.join(*args)
example_text = """$TTL 3600
$ORIGIN example.
@ soa foo bar 1 2 3 4 5
@ ns ns1
@ ns ns2
ns1 a 10.0.0.1
ns2 a 10.0.0.2
$TTL 300
$ORIGIN foo.example.
bar mx 0 blaz
"""
example_text_output = """@ 3600 IN SOA foo bar 1 2 3 4 5
@ 3600 IN NS ns1
@ 3600 IN NS ns2
bar.foo 300 IN MX 0 blaz.foo
ns1 3600 IN A 10.0.0.1
ns2 3600 IN A 10.0.0.2
"""
something_quite_similar = """@ 3600 IN SOA foo bar 1 2 3 4 5
@ 3600 IN NS ns1
@ 3600 IN NS ns2
bar.foo 300 IN MX 0 blaz.foo
ns1 3600 IN A 10.0.0.1
ns2 3600 IN A 10.0.0.3
"""
something_different = """@ 3600 IN SOA fooa bar 1 2 3 4 5
@ 3600 IN NS ns11
@ 3600 IN NS ns21
bar.fooa 300 IN MX 0 blaz.fooa
ns11 3600 IN A 10.0.0.11
ns21 3600 IN A 10.0.0.21
"""
ttl_example_text = """$TTL 1h
$ORIGIN example.
@ soa foo bar 1 2 3 4 5
@ ns ns1
@ ns ns2
ns1 1d1s a 10.0.0.1
ns2 1w1D1h1m1S a 10.0.0.2
"""
no_soa_text = """$TTL 1h
$ORIGIN example.
@ ns ns1
@ ns ns2
ns1 1d1s a 10.0.0.1
ns2 1w1D1h1m1S a 10.0.0.2
"""
no_ns_text = """$TTL 1h
$ORIGIN example.
@ soa foo bar 1 2 3 4 5
"""
include_text = """$INCLUDE "%s"
""" % fname("example", sep="/")
bad_directive_text = """$FOO bar
$ORIGIN example.
@ soa foo bar 1 2 3 4 5
@ ns ns1
@ ns ns2
ns1 1d1s a 10.0.0.1
ns2 1w1D1h1m1S a 10.0.0.2
"""
def get_file_lines (fn):
res = []
with open(fn) as fd:
for line in fd:
res.append(line)
return res
def get_file_diff (fn1, fn2):
res = []
c1 = get_file_lines(fn1)
c2 = get_file_lines(fn2)
for line in difflib.unified_diff(c1, c2):
if not isinstance(line, unicode):
line = unicode(line, "iso8859-1", "ignore")
res.append(line)
return res
class TestZone (unittest.TestCase):
def testFromFile1(self):
z = linkcheck.dns.zone.from_file(fname('example'), 'example')
diff = True
try:
z.to_file(fname('example1.out'), nl='\x0a')
fn1 = fname('example1.out')
fn2 = fname('example1.good')
diff = get_file_diff(fn1, fn2)
finally:
os.unlink(fname('example1.out'))
self.assertFalse(diff)
def testFromFile2(self):
z = linkcheck.dns.zone.from_file(fname('example'), 'example',
relativize=False)
diff = True
try:
z.to_file(fname('example2.out'), relativize=False, nl='\x0a')
fn1 = fname('example2.out')
fn2 = fname('example2.good')
diff = get_file_diff(fn1, fn2)
finally:
os.unlink(fname('example2.out'))
self.assertFalse(diff)
def testFromText(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
f = StringIO()
names = z.nodes.keys()
names.sort()
for n in names:
print >> f, z[n].to_text(n)
self.assertEqual(f.getvalue(), example_text_output)
def testTorture1(self):
# Read a zone containing all our supported RR types, and
# for each RR in the zone, convert the rdata into wire format
# and then back out, and see if we get equal rdatas.
f = StringIO()
o = linkcheck.dns.name.from_text('example.')
z = linkcheck.dns.zone.from_file(fname('example'), o)
for (name, node) in z.iteritems():
for rds in node:
for rd in rds:
f.seek(0)
f.truncate()
rd.to_wire(f, origin=o)
wire = f.getvalue()
rd2 = linkcheck.dns.rdata.from_wire(rds.rdclass, rds.rdtype,
wire, 0, len(wire),
origin = o)
self.assertEqual(rd, rd2)
def testEqual(self):
z1 = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
z2 = linkcheck.dns.zone.from_text(example_text_output, 'example.',
relativize=True)
self.assertEqual(z1, z2)
def testNotEqual1(self):
z1 = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
z2 = linkcheck.dns.zone.from_text(something_quite_similar, 'example.',
relativize=True)
self.assertNotEqual(z1, z2)
def testNotEqual2(self):
z1 = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
z2 = linkcheck.dns.zone.from_text(something_different, 'example.',
relativize=True)
self.assertNotEqual(z1, z2)
def testNotEqual3(self):
z1 = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
z2 = linkcheck.dns.zone.from_text(something_different, 'example2.',
relativize=True)
self.assertNotEqual(z1, z2)
def testFindRdataset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rds = z.find_rdataset('@', 'soa')
exrds = linkcheck.dns.rdataset.from_text('IN', 'SOA', 300, 'foo bar 1 2 3 4 5')
self.assertEqual(rds, exrds)
def testFindRdataset2(self):
def bad():
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rds = z.find_rdataset('@', 'loc')
self.assertRaises(KeyError, bad)
def testFindRRset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rrs = z.find_rrset('@', 'soa')
exrrs = linkcheck.dns.rrset.from_text('@', 300, 'IN', 'SOA', 'foo bar 1 2 3 4 5')
self.assertEqual(rrs, exrrs)
def testFindRRset2(self):
def bad():
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rrs = z.find_rrset('@', 'loc')
self.assertRaises(KeyError, bad)
def testGetRdataset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rds = z.get_rdataset('@', 'soa')
exrds = linkcheck.dns.rdataset.from_text('IN', 'SOA', 300, 'foo bar 1 2 3 4 5')
self.assertEqual(rds, exrds)
def testGetRdataset2(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rds = z.get_rdataset('@', 'loc')
self.assertEqual(rds, None)
def testGetRRset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rrs = z.get_rrset('@', 'soa')
exrrs = linkcheck.dns.rrset.from_text('@', 300, 'IN', 'SOA', 'foo bar 1 2 3 4 5')
self.assertEqual(rrs, exrrs)
def testGetRRset2(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rrs = z.get_rrset('@', 'loc')
self.assertEqual(rrs, None)
def testReplaceRdataset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rdataset = linkcheck.dns.rdataset.from_text('in', 'ns', 300, 'ns3', 'ns4')
z.replace_rdataset('@', rdataset)
rds = z.get_rdataset('@', 'ns')
self.assertTrue(rds is rdataset)
def testReplaceRdataset2(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
rdataset = linkcheck.dns.rdataset.from_text('in', 'txt', 300, '"foo"')
z.replace_rdataset('@', rdataset)
rds = z.get_rdataset('@', 'txt')
self.assertTrue(rds is rdataset)
def testDeleteRdataset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
z.delete_rdataset('@', 'ns')
rds = z.get_rdataset('@', 'ns')
self.assertTrue(rds is None)
def testDeleteRdataset2(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
z.delete_rdataset('ns1', 'a')
node = z.get_node('ns1')
self.assertTrue(node is None)
def testNodeFindRdataset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
node = z['@']
rds = node.find_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.SOA)
exrds = linkcheck.dns.rdataset.from_text('IN', 'SOA', 300, 'foo bar 1 2 3 4 5')
self.assertEqual(rds, exrds)
def testNodeFindRdataset2(self):
def bad():
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
node = z['@']
rds = node.find_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.LOC)
self.assertRaises(KeyError, bad)
def testNodeGetRdataset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
node = z['@']
rds = node.get_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.SOA)
exrds = linkcheck.dns.rdataset.from_text('IN', 'SOA', 300, 'foo bar 1 2 3 4 5')
self.assertEqual(rds, exrds)
def testNodeGetRdataset2(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
node = z['@']
rds = node.get_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.LOC)
self.assertEqual(rds, None)
def testNodeDeleteRdataset1(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
node = z['@']
rds = node.delete_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.SOA)
rds = node.get_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.SOA)
self.assertEqual(rds, None)
def testNodeDeleteRdataset2(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
node = z['@']
rds = node.delete_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.LOC)
rds = node.get_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.LOC)
self.assertEqual(rds, None)
def testIterateRdatasets(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
ns = [n for n, r in z.iterate_rdatasets('A')]
ns.sort()
self.assertEqual(ns, [linkcheck.dns.name.from_text('ns1', None),
linkcheck.dns.name.from_text('ns2', None)])
def testIterateAllRdatasets(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
ns = [n for n, r in z.iterate_rdatasets()]
ns.sort()
self.assertTrue(ns == [linkcheck.dns.name.from_text('@', None),
linkcheck.dns.name.from_text('@', None),
linkcheck.dns.name.from_text('bar.foo', None),
linkcheck.dns.name.from_text('ns1', None),
linkcheck.dns.name.from_text('ns2', None)])
def testIterateRdatas(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
l = list(z.iterate_rdatas('A'))
l.sort()
exl = [(linkcheck.dns.name.from_text('ns1', None),
3600,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.A,
'10.0.0.1')),
(linkcheck.dns.name.from_text('ns2', None),
3600,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.A,
'10.0.0.2'))]
self.assertEqual(l, exl)
def testIterateAllRdatas(self):
z = linkcheck.dns.zone.from_text(example_text, 'example.', relativize=True)
l = list(z.iterate_rdatas())
l.sort()
exl = [(linkcheck.dns.name.from_text('@', None),
3600,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN,
linkcheck.dns.rdatatype.NS, 'ns1')),
(linkcheck.dns.name.from_text('@', None),
3600,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN,
linkcheck.dns.rdatatype.NS, 'ns2')),
(linkcheck.dns.name.from_text('@', None),
3600,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN,
linkcheck.dns.rdatatype.SOA,
'foo bar 1 2 3 4 5')),
(linkcheck.dns.name.from_text('bar.foo', None),
300,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN,
linkcheck.dns.rdatatype.MX,
'0 blaz.foo')),
(linkcheck.dns.name.from_text('ns1', None),
3600,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN,
linkcheck.dns.rdatatype.A,
'10.0.0.1')),
(linkcheck.dns.name.from_text('ns2', None),
3600,
linkcheck.dns.rdata.from_text(linkcheck.dns.rdataclass.IN,
linkcheck.dns.rdatatype.A,
'10.0.0.2'))]
self.assertEqual(l, exl)
def testTTLs(self):
z = linkcheck.dns.zone.from_text(ttl_example_text, 'example.', relativize=True)
n = z['@']
rds = n.get_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.SOA)
self.assertEqual(rds.ttl, 3600)
n = z['ns1']
rds = n.get_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.A)
self.assertEqual(rds.ttl, 86401)
n = z['ns2']
rds = n.get_rdataset(linkcheck.dns.rdataclass.IN, linkcheck.dns.rdatatype.A)
self.assertEqual(rds.ttl, 694861)
def testNoSOA(self):
def bad():
z = linkcheck.dns.zone.from_text(no_soa_text, 'example.',
relativize=True)
self.assertRaises(linkcheck.dns.zone.NoSOA, bad)
def testNoNS(self):
def bad():
z = linkcheck.dns.zone.from_text(no_ns_text, 'example.',
relativize=True)
self.assertRaises(linkcheck.dns.zone.NoNS, bad)
def testInclude(self):
z1 = linkcheck.dns.zone.from_text(include_text, 'example.', relativize=True,
allow_include=True)
z2 = linkcheck.dns.zone.from_file(fname('example'), 'example.',
relativize=True)
self.assertEqual(z1, z2)
def testBadDirective(self):
def bad():
z = linkcheck.dns.zone.from_text(bad_directive_text, 'example.',
relativize=True)
self.assertRaises(linkcheck.dns.exception.DNSSyntaxError, bad)
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