Edit File: GPOS.py
# Copyright (C) 2003-2007, 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 struct import dns.exception import dns.rdata import dns.tokenizer from dns._compat import long, text_type def _validate_float_string(what): if what[0] == b'-'[0] or what[0] == b'+'[0]: what = what[1:] if what.isdigit(): return (left, right) = what.split(b'.') if left == b'' and right == b'': raise dns.exception.FormError if not left == b'' and not left.decode().isdigit(): raise dns.exception.FormError if not right == b'' and not right.decode().isdigit(): raise dns.exception.FormError def _sanitize(value): if isinstance(value, text_type): return value.encode() return value class GPOS(dns.rdata.Rdata): """GPOS record @ivar latitude: latitude @type latitude: string @ivar longitude: longitude @type longitude: string @ivar altitude: altitude @type altitude: string @see: RFC 1712""" __slots__ = ['latitude', 'longitude', 'altitude'] def __init__(self, rdclass, rdtype, latitude, longitude, altitude): super(GPOS, self).__init__(rdclass, rdtype) if isinstance(latitude, float) or \ isinstance(latitude, int) or \ isinstance(latitude, long): latitude = str(latitude) if isinstance(longitude, float) or \ isinstance(longitude, int) or \ isinstance(longitude, long): longitude = str(longitude) if isinstance(altitude, float) or \ isinstance(altitude, int) or \ isinstance(altitude, long): altitude = str(altitude) latitude = _sanitize(latitude) longitude = _sanitize(longitude) altitude = _sanitize(altitude) _validate_float_string(latitude) _validate_float_string(longitude) _validate_float_string(altitude) self.latitude = latitude self.longitude = longitude self.altitude = altitude def to_text(self, origin=None, relativize=True, **kw): return '%s %s %s' % (self.latitude.decode(), self.longitude.decode(), self.altitude.decode()) @classmethod def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True): latitude = tok.get_string() longitude = tok.get_string() altitude = tok.get_string() tok.get_eol() return cls(rdclass, rdtype, latitude, longitude, altitude) def to_wire(self, file, compress=None, origin=None): l = len(self.latitude) assert l < 256 file.write(struct.pack('!B', l)) file.write(self.latitude) l = len(self.longitude) assert l < 256 file.write(struct.pack('!B', l)) file.write(self.longitude) l = len(self.altitude) assert l < 256 file.write(struct.pack('!B', l)) file.write(self.altitude) @classmethod def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None): l = wire[current] current += 1 rdlen -= 1 if l > rdlen: raise dns.exception.FormError latitude = wire[current: current + l].unwrap() current += l rdlen -= l l = wire[current] current += 1 rdlen -= 1 if l > rdlen: raise dns.exception.FormError longitude = wire[current: current + l].unwrap() current += l rdlen -= l l = wire[current] current += 1 rdlen -= 1 if l != rdlen: raise dns.exception.FormError altitude = wire[current: current + l].unwrap() return cls(rdclass, rdtype, latitude, longitude, altitude) def _get_float_latitude(self): return float(self.latitude) def _set_float_latitude(self, value): self.latitude = str(value) float_latitude = property(_get_float_latitude, _set_float_latitude, doc="latitude as a floating point value") def _get_float_longitude(self): return float(self.longitude) def _set_float_longitude(self, value): self.longitude = str(value) float_longitude = property(_get_float_longitude, _set_float_longitude, doc="longitude as a floating point value") def _get_float_altitude(self): return float(self.altitude) def _set_float_altitude(self, value): self.altitude = str(value) float_altitude = property(_get_float_altitude, _set_float_altitude, doc="altitude as a floating point value")
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