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# 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 dns.exception
import dns.rdata
import dns.tokenizer
def _validate_float_string(what):
if what[0] == '-' or what[0] == '+':
what = what[1:]
if what.isdigit():
return
(left, right) = what.split('.')
if left == '' and right == '':
raise dns.exception.FormError
if not left == '' and not left.isdigit():
raise dns.exception.FormError
if not right == '' and not right.isdigit():
raise dns.exception.FormError
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)
_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, self.longitude, self.altitude)
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)
from_text = classmethod(from_text)
def to_wire(self, file, compress = None, origin = None):
l = len(self.latitude)
assert l < 256
byte = chr(l)
file.write(byte)
file.write(self.latitude)
l = len(self.longitude)
assert l < 256
byte = chr(l)
file.write(byte)
file.write(self.longitude)
l = len(self.altitude)
assert l < 256
byte = chr(l)
file.write(byte)
file.write(self.altitude)
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
latitude = wire[current : current + l].unwrap()
current += l
rdlen -= l
l = ord(wire[current])
current += 1
rdlen -= 1
if l > rdlen:
raise dns.exception.FormError
longitude = wire[current : current + l].unwrap()
current += l
rdlen -= l
l = ord(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)
from_wire = classmethod(from_wire)
def _cmp(self, other):
v = cmp(self.latitude, other.latitude)
if v == 0:
v = cmp(self.longitude, other.longitude)
if v == 0:
v = cmp(self.altitude, other.altitude)
return v
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")