| # Copyright (C) 2003-2007, 2009, 2010 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 dns.exception |
| import dns.rdata |
| import dns.tokenizer |
| |
| class HINFO(dns.rdata.Rdata): |
| """HINFO record |
| |
| @ivar cpu: the CPU type |
| @type cpu: string |
| @ivar os: the OS type |
| @type os: string |
| @see: RFC 1035""" |
| |
| __slots__ = ['cpu', 'os'] |
| |
| def __init__(self, rdclass, rdtype, cpu, os): |
| super(HINFO, self).__init__(rdclass, rdtype) |
| self.cpu = cpu |
| self.os = os |
| |
| def to_text(self, origin=None, relativize=True, **kw): |
| return '"%s" "%s"' % (dns.rdata._escapify(self.cpu), |
| dns.rdata._escapify(self.os)) |
| |
| def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): |
| cpu = tok.get_string() |
| os = tok.get_string() |
| tok.get_eol() |
| return cls(rdclass, rdtype, cpu, os) |
| |
| from_text = classmethod(from_text) |
| |
| def to_wire(self, file, compress = None, origin = None): |
| l = len(self.cpu) |
| assert l < 256 |
| byte = chr(l) |
| file.write(byte) |
| file.write(self.cpu) |
| l = len(self.os) |
| assert l < 256 |
| byte = chr(l) |
| file.write(byte) |
| file.write(self.os) |
| |
| def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None): |
| l = ord(wire[current]) |
| current += 1 |
| rdlen -= 1 |
| if l > rdlen: |
| raise dns.exception.FormError |
| cpu = wire[current : current + l] |
| current += l |
| rdlen -= l |
| l = ord(wire[current]) |
| current += 1 |
| rdlen -= 1 |
| if l != rdlen: |
| raise dns.exception.FormError |
| os = wire[current : current + l] |
| return cls(rdclass, rdtype, cpu, os) |
| |
| from_wire = classmethod(from_wire) |
| |
| def _cmp(self, other): |
| v = cmp(self.cpu, other.cpu) |
| if v == 0: |
| v = cmp(self.os, other.os) |
| return v |
