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# -*- coding: utf-8
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2006, 2007, 2009-2011 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.
import unittest
import dns.name
import dns.rdata
import dns.rdataclass
import dns.rdatatype
import tests.ttxt_module
class RdataTestCase(unittest.TestCase):
def test_str(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "1.2.3.4")
self.assertEqual(rdata.address, "1.2.3.4")
def test_unicode(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, u"1.2.3.4")
self.assertEqual(rdata.address, "1.2.3.4")
def test_module_registration(self):
TTXT = 64001
dns.rdata.register_type(tests.ttxt_module, TTXT, 'TTXT')
rdata = dns.rdata.from_text(dns.rdataclass.IN, TTXT, 'hello world')
self.assertEqual(rdata.strings, (b'hello', b'world'))
self.assertEqual(dns.rdatatype.to_text(TTXT), 'TTXT')
self.assertEqual(dns.rdatatype.from_text('TTXT'), TTXT)
def test_module_reregistration(self):
def bad():
TTXTTWO = dns.rdatatype.TXT
dns.rdata.register_type(tests.ttxt_module, TTXTTWO, 'TTXTTWO')
self.assertRaises(dns.rdata.RdatatypeExists, bad)
def test_replace(self):
a1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "1.2.3.4")
a2 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "2.3.4.5")
self.assertEqual(a1.replace(address="2.3.4.5"), a2)
mx = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.MX,
"10 foo.example")
name = dns.name.from_text("bar.example")
self.assertEqual(mx.replace(preference=20).preference, 20)
self.assertEqual(mx.replace(preference=20).exchange, mx.exchange)
self.assertEqual(mx.replace(exchange=name).exchange, name)
self.assertEqual(mx.replace(exchange=name).preference, mx.preference)
for invalid_parameter in ("rdclass", "rdtype", "foo", "__class__"):
with self.assertRaises(AttributeError):
mx.replace(invalid_parameter=1)
def test_to_generic(self):
a = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "1.2.3.4")
self.assertEqual(str(a.to_generic()), r'\# 4 01020304')
mx = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.MX, "10 foo.")
self.assertEqual(str(mx.to_generic()), r'\# 7 000a03666f6f00')
origin = dns.name.from_text('example')
ns = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.NS,
"foo.example.", relativize_to=origin)
self.assertEqual(str(ns.to_generic(origin=origin)),
r'\# 13 03666f6f076578616d706c6500')
def test_txt_unicode(self):
# TXT records are not defined for Unicode, but if we get
# Unicode we should convert it to UTF-8 to preserve meaning as
# best we can. Note that it when the TXT record is sent
# to_text(), it does NOT convert embedded UTF-8 back to
# Unicode; it's just treated as binary TXT data. Probably
# there should be a TXT-like record with an encoding field.
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT,
'"foo\u200bbar"')
self.assertEqual(str(rdata), '"foo\\226\\128\\139bar"')
# We used to encode UTF-8 in UTF-8 because we processed
# escapes in quoted strings immediately. This meant that the
# \\226 below would be inserted as Unicode code point 226, and
# then when we did to_text, we would UTF-8 encode that code
# point, emitting \\195\\162 instead of \\226, and thus
# from_text followed by to_text was not the equal to the
# original input like it ought to be.
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT,
'"foo\\226\\128\\139bar"')
self.assertEqual(str(rdata), '"foo\\226\\128\\139bar"')
# Our fix for TXT-like records uses a new tokenizer method,
# unescape_to_bytes(), which converts Unicode to UTF-8 only
# once.
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT,
'"foo\u200b\\123bar"')
self.assertEqual(str(rdata), '"foo\\226\\128\\139{bar"')
def test_unicode_idna2003_in_rdata(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.NS,
"Königsgäßchen")
self.assertEqual(str(rdata.target), 'xn--knigsgsschen-lcb0w')
def test_unicode_idna2008_in_rdata(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.NS,
"Königsgäßchen",
idna_codec=dns.name.IDNA_2008)
self.assertEqual(str(rdata.target), 'xn--knigsgchen-b4a3dun')
if __name__ == '__main__':
unittest.main()
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