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1 # Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license 2 3 # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc. 4 # Copyright (C) 2015 Red Hat, Inc. 5 # 6 # Permission to use, copy, modify, and distribute this software and its 7 # documentation for any purpose with or without fee is hereby granted, 8 # provided that the above copyright notice and this permission notice 9 # appear in all copies. 10 # 11 # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES 12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR 14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 17 # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 19 import struct 20 21 import dns.exception 22 import dns.rdata 23 import dns.name 24 from dns._compat import text_type28 29 """URI record 30 31 @ivar priority: the priority 32 @type priority: int 33 @ivar weight: the weight 34 @type weight: int 35 @ivar target: the target host 36 @type target: dns.name.Name object 37 @see: draft-faltstrom-uri-13""" 38 39 __slots__ = ['priority', 'weight', 'target'] 408342 super(URI, self).__init__(rdclass, rdtype) 43 self.priority = priority 44 self.weight = weight 45 if len(target) < 1: 46 raise dns.exception.SyntaxError("URI target cannot be empty") 47 if isinstance(target, text_type): 48 self.target = target.encode() 49 else: 50 self.target = target51 55 56 @classmethod58 priority = tok.get_uint16() 59 weight = tok.get_uint16() 60 target = tok.get().unescape() 61 if not (target.is_quoted_string() or target.is_identifier()): 62 raise dns.exception.SyntaxError("URI target must be a string") 63 tok.get_eol() 64 return cls(rdclass, rdtype, priority, weight, target.value)6567 two_ints = struct.pack("!HH", self.priority, self.weight) 68 file.write(two_ints) 69 file.write(self.target)70 71 @classmethod73 if rdlen < 5: 74 raise dns.exception.FormError('URI RR is shorter than 5 octets') 75 76 (priority, weight) = struct.unpack('!HH', wire[current: current + 4]) 77 current += 4 78 rdlen -= 4 79 target = wire[current: current + rdlen] 80 current += rdlen 81 82 return cls(rdclass, rdtype, priority, weight, target)
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