| # 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 ISDN(dns.rdata.Rdata): |
| """ISDN record |
| |
| @ivar address: the ISDN address |
| @type address: string |
| @ivar subaddress: the ISDN subaddress (or '' if not present) |
| @type subaddress: string |
| @see: RFC 1183""" |
| |
| __slots__ = ['address', 'subaddress'] |
| |
| def __init__(self, rdclass, rdtype, address, subaddress): |
| super(ISDN, self).__init__(rdclass, rdtype) |
| self.address = address |
| self.subaddress = subaddress |
| |
| def to_text(self, origin=None, relativize=True, **kw): |
| if self.subaddress: |
| return '"%s" "%s"' % (dns.rdata._escapify(self.address), |
| dns.rdata._escapify(self.subaddress)) |
| else: |
| return '"%s"' % dns.rdata._escapify(self.address) |
| |
| def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): |
| address = tok.get_string() |
| t = tok.get() |
| if not t.is_eol_or_eof(): |
| tok.unget(t) |
| subaddress = tok.get_string() |
| else: |
| tok.unget(t) |
| subaddress = '' |
| tok.get_eol() |
| return cls(rdclass, rdtype, address, subaddress) |
| |
| from_text = classmethod(from_text) |
| |
| def to_wire(self, file, compress = None, origin = None): |
| l = len(self.address) |
| assert l < 256 |
| byte = chr(l) |
| file.write(byte) |
| file.write(self.address) |
| l = len(self.subaddress) |
| if l > 0: |
| assert l < 256 |
| byte = chr(l) |
| file.write(byte) |
| file.write(self.subaddress) |
| |
| 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 |
| address = wire[current : current + l] |
| current += l |
| rdlen -= l |
| if rdlen > 0: |
| l = ord(wire[current]) |
| current += 1 |
| rdlen -= 1 |
| if l != rdlen: |
| raise dns.exception.FormError |
| subaddress = wire[current : current + l] |
| else: |
| subaddress = '' |
| return cls(rdclass, rdtype, address, subaddress) |
| |
| from_wire = classmethod(from_wire) |
| |
| def _cmp(self, other): |
| v = cmp(self.address, other.address) |
| if v == 0: |
| v = cmp(self.subaddress, other.subaddress) |
| return v |
