diff options
| author | Bob Halley <halley@dnspython.org> | 2021-10-25 17:37:00 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-25 17:37:00 -0700 |
| commit | 99166c2c2915c594df5cbbb2fffa6075309ae703 (patch) | |
| tree | 6fd73c36471bfdc290ba09d7ff84c2bcb4d0a5f1 /tests | |
| parent | e298b0d231db0444746886252c9a48ce8fce364d (diff) | |
| parent | a6ba21c6f07d4fbc481d21a3a660e5ecfef32476 (diff) | |
| download | dnspython-99166c2c2915c594df5cbbb2fffa6075309ae703.tar.gz | |
Merge pull request #694 from rthalley/continue_on_error
Continue on error
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/test_message.py | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/tests/test_message.py b/tests/test_message.py index 8fcc674..190385a 100644 --- a/tests/test_message.py +++ b/tests/test_message.py @@ -562,7 +562,7 @@ www.example. IN CNAME ;AUTHORITY example. 300 IN SOA . . 1 2 3 4 5 ''') - # passing is actuall not going into an infinite loop in this call + # passing is not going into an infinite loop in this call result = r.resolve_chaining() self.assertEqual(result.canonical_name, dns.name.from_text('www.example.')) @@ -684,6 +684,46 @@ flags QR m = dns.message.from_wire(goodwire) self.assertIsInstance(m.flags, dns.flags.Flag) self.assertEqual(m.flags, dns.flags.Flag.RD) + + def test_continue_on_error(self): + good_message = dns.message.from_text( +"""id 1234 +opcode QUERY +rcode NOERROR +flags QR AA RD +;QUESTION +www.dnspython.org. IN SOA +;ANSWER +www.dnspython.org. 300 IN SOA . . 1 2 3 4 5 +www.dnspython.org. 300 IN A 1.2.3.4 +www.dnspython.org. 300 IN AAAA ::1 +""") + wire = good_message.to_wire() + # change ANCOUNT to 255 + bad_wire = wire[:6] + b'\x00\xff' + wire[8:] + # change AAAA into rdata with rdlen 0 + bad_wire = bad_wire[:-18] + b'\x00' * 2 + # change SOA MINIMUM field to 0xffffffff (too large) + bad_wire = bad_wire.replace(b'\x00\x00\x00\x05', b'\xff' * 4) + m = dns.message.from_wire(bad_wire, continue_on_error=True) + self.assertEqual(len(m.errors), 3) + print(m.errors) + self.assertEqual(str(m.errors[0].exception), 'value too large') + self.assertEqual(str(m.errors[1].exception), + 'IPv6 addresses are 16 bytes long') + self.assertEqual(str(m.errors[2].exception), + 'DNS message is malformed.') + expected_message = dns.message.from_text( +"""id 1234 +opcode QUERY +rcode NOERROR +flags QR AA RD +;QUESTION +www.dnspython.org. IN SOA +;ANSWER +www.dnspython.org. 300 IN A 1.2.3.4 +""") + self.assertEqual(m, expected_message) if __name__ == '__main__': |