Zeroconf.py
author laurent
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""" Multicast DNS Service Discovery for Python, v0.12
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    Copyright (C) 2003, Paul Scott-Murphy
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    This module provides a framework for the use of DNS Service Discovery
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    using IP multicast.  It has been tested against the JRendezvous
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    implementation from <a href="http://strangeberry.com">StrangeBerry</a>,
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    and against the mDNSResponder from Mac OS X 10.3.8.
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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"""0.12 update - allow selection of binding interface
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         typo fix - Thanks A. M. Kuchlingi
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         removed all use of word 'Rendezvous' - this is an API change"""
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"""0.11 update - correction to comments for addListener method
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                 support for new record types seen from OS X
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                  - IPv6 address
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                  - hostinfo
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                 ignore unknown DNS record types
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                 fixes to name decoding
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                 works alongside other processes using port 5353 (e.g. on Mac OS X)
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                 tested against Mac OS X 10.3.2's mDNSResponder
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                 corrections to removal of list entries for service browser"""
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"""0.10 update - Jonathon Paisley contributed these corrections:
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                 always multicast replies, even when query is unicast
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                 correct a pointer encoding problem
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                 can now write records in any order
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                 traceback shown on failure
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                 better TXT record parsing
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                 server is now separate from name
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                 can cancel a service browser
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                 modified some unit tests to accommodate these changes"""
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"""0.09 update - remove all records on service unregistration
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                 fix DOS security problem with readName"""
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"""0.08 update - changed licensing to LGPL"""
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"""0.07 update - faster shutdown on engine
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                 pointer encoding of outgoing names
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                 ServiceBrowser now works
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                 new unit tests"""
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"""0.06 update - small improvements with unit tests
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                 added defined exception types
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                 new style objects
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                 fixed hostname/interface problem
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                 fixed socket timeout problem
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                 fixed addServiceListener() typo bug
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                 using select() for socket reads
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                 tested on Debian unstable with Python 2.2.2"""
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"""0.05 update - ensure case insensitivty on domain names
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                 support for unicast DNS queries"""
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"""0.04 update - added some unit tests
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                 added __ne__ adjuncts where required
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                 ensure names end in '.local.'
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                 timeout on receiving socket for clean shutdown"""
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__author__ = "Paul Scott-Murphy"
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__email__ = "paul at scott dash murphy dot com"
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__version__ = "0.12"
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import string
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import time
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import struct
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import socket
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import threading
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import select
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import traceback
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__all__ = ["Zeroconf", "ServiceInfo", "ServiceBrowser"]
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# hook for threads
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globals()['_GLOBAL_DONE'] = 0
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# Some timing constants
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_UNREGISTER_TIME = 125
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_CHECK_TIME = 175
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_REGISTER_TIME = 225
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_LISTENER_TIME = 200
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_BROWSER_TIME = 500
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# Some DNS constants
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_MDNS_ADDR = '224.0.0.251'
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_MDNS_PORT = 5353;
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_DNS_PORT = 53;
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_DNS_TTL = 60 * 60; # one hour default TTL
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_MAX_MSG_TYPICAL = 1460 # unused
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_MAX_MSG_ABSOLUTE = 8972
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_FLAGS_QR_MASK = 0x8000 # query response mask
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_FLAGS_QR_QUERY = 0x0000 # query
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_FLAGS_QR_RESPONSE = 0x8000 # response
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_FLAGS_AA = 0x0400 # Authorative answer
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_FLAGS_TC = 0x0200 # Truncated
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_FLAGS_RD = 0x0100 # Recursion desired
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_FLAGS_RA = 0x8000 # Recursion available
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_FLAGS_Z = 0x0040 # Zero
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_FLAGS_AD = 0x0020 # Authentic data
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_FLAGS_CD = 0x0010 # Checking disabled
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_CLASS_IN = 1
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_CLASS_CS = 2
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_CLASS_CH = 3
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_CLASS_HS = 4
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_CLASS_NONE = 254
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_CLASS_ANY = 255
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_CLASS_MASK = 0x7FFF
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_CLASS_UNIQUE = 0x8000
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_TYPE_A = 1
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_TYPE_NS = 2
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_TYPE_MD = 3
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_TYPE_MF = 4
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_TYPE_CNAME = 5
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_TYPE_SOA = 6
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_TYPE_MB = 7
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_TYPE_MG = 8
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_TYPE_MR = 9
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_TYPE_NULL = 10
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_TYPE_WKS = 11
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_TYPE_PTR = 12
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_TYPE_HINFO = 13
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_TYPE_MINFO = 14
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_TYPE_MX = 15
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_TYPE_TXT = 16
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_TYPE_AAAA = 28
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_TYPE_SRV = 33
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_TYPE_ANY =  255
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# Mapping constants to names
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_CLASSES = { _CLASS_IN : "in",
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             _CLASS_CS : "cs",
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             _CLASS_CH : "ch",
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             _CLASS_HS : "hs",
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             _CLASS_NONE : "none",
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             _CLASS_ANY : "any" }
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_TYPES = { _TYPE_A : "a",
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           _TYPE_NS : "ns",
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           _TYPE_MD : "md",
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           _TYPE_MF : "mf",
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           _TYPE_CNAME : "cname",
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           _TYPE_SOA : "soa",
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           _TYPE_MB : "mb",
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           _TYPE_MG : "mg",
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           _TYPE_MR : "mr",
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           _TYPE_NULL : "null",
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           _TYPE_WKS : "wks",
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           _TYPE_PTR : "ptr",
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           _TYPE_HINFO : "hinfo",
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           _TYPE_MINFO : "minfo",
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           _TYPE_MX : "mx",
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           _TYPE_TXT : "txt",
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           _TYPE_AAAA : "quada",
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           _TYPE_SRV : "srv",
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           _TYPE_ANY : "any" }
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# utility functions
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def currentTimeMillis():
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    """Current system time in milliseconds"""
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    return time.time() * 1000
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# Exceptions
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class NonLocalNameException(Exception):
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    pass
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class NonUniqueNameException(Exception):
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    pass
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class NamePartTooLongException(Exception):
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    pass
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class AbstractMethodException(Exception):
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    pass
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class BadTypeInNameException(Exception):
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    pass
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# implementation classes
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class DNSEntry(object):
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    """A DNS entry"""
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    def __init__(self, name, type, clazz):
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        self.key = string.lower(name)
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        self.name = name
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        self.type = type
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        self.clazz = clazz & _CLASS_MASK
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        self.unique = (clazz & _CLASS_UNIQUE) != 0
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    def __eq__(self, other):
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        """Equality test on name, type, and class"""
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        if isinstance(other, DNSEntry):
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            return self.name == other.name and self.type == other.type and self.clazz == other.clazz
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        return 0
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    def __ne__(self, other):
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        """Non-equality test"""
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        return not self.__eq__(other)
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    def getClazz(self, clazz):
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        """Class accessor"""
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        try:
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            return _CLASSES[clazz]
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        except:
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            return "?(%s)" % (clazz)
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    def getType(self, type):
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        """Type accessor"""
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        try:
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            return _TYPES[type]
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        except:
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            return "?(%s)" % (type)
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    def toString(self, hdr, other):
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        """String representation with additional information"""
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        result = "%s[%s,%s" % (hdr, self.getType(self.type), self.getClazz(self.clazz))
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        if self.unique:
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            result += "-unique,"
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        else:
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            result += ","
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        result += self.name
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        if other is not None:
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            result += ",%s]" % (other)
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        else:
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            result += "]"
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        return result
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class DNSQuestion(DNSEntry):
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    """A DNS question entry"""
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    def __init__(self, name, type, clazz):
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        if not name.endswith(".local."):
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            raise NonLocalNameException
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        DNSEntry.__init__(self, name, type, clazz)
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    def answeredBy(self, rec):
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        """Returns true if the question is answered by the record"""
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        return self.clazz == rec.clazz and (self.type == rec.type or self.type == _TYPE_ANY) and self.name == rec.name
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    def __repr__(self):
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        """String representation"""
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        return DNSEntry.toString(self, "question", None)
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class DNSRecord(DNSEntry):
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    """A DNS record - like a DNS entry, but has a TTL"""
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    def __init__(self, name, type, clazz, ttl):
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        DNSEntry.__init__(self, name, type, clazz)
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        self.ttl = ttl
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        self.created = currentTimeMillis()
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    def __eq__(self, other):
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        """Tests equality as per DNSRecord"""
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        if isinstance(other, DNSRecord):
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            return DNSEntry.__eq__(self, other)
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        return 0
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    def suppressedBy(self, msg):
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        """Returns true if any answer in a message can suffice for the
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        information held in this record."""
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        for record in msg.answers:
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            if self.suppressedByAnswer(record):
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                return 1
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        return 0
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    def suppressedByAnswer(self, other):
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        """Returns true if another record has same name, type and class,
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        and if its TTL is at least half of this record's."""
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        if self == other and other.ttl > (self.ttl / 2):
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            return 1
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        return 0
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    def getExpirationTime(self, percent):
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        """Returns the time at which this record will have expired
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        by a certain percentage."""
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        return self.created + (percent * self.ttl * 10)
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    def getRemainingTTL(self, now):
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        """Returns the remaining TTL in seconds."""
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        return max(0, (self.getExpirationTime(100) - now) / 1000)
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    def isExpired(self, now):
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        """Returns true if this record has expired."""
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        return self.getExpirationTime(100) <= now
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    def isStale(self, now):
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        """Returns true if this record is at least half way expired."""
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        return self.getExpirationTime(50) <= now
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    def resetTTL(self, other):
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        """Sets this record's TTL and created time to that of
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        another record."""
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        self.created = other.created
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        self.ttl = other.ttl
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    def write(self, out):
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        """Abstract method"""
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        raise AbstractMethodException
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    def toString(self, other):
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        """String representation with addtional information"""
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        arg = "%s/%s,%s" % (self.ttl, self.getRemainingTTL(currentTimeMillis()), other)
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        return DNSEntry.toString(self, "record", arg)
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class DNSAddress(DNSRecord):
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    """A DNS address record"""
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    def __init__(self, name, type, clazz, ttl, address):
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        DNSRecord.__init__(self, name, type, clazz, ttl)
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        self.address = address
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   341
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   342
    def write(self, out):
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   343
        """Used in constructing an outgoing packet"""
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   344
        out.writeString(self.address, len(self.address))
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   345
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   346
    def __eq__(self, other):
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   347
        """Tests equality on address"""
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   348
        if isinstance(other, DNSAddress):
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   349
            return self.address == other.address
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   350
        return 0
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   351
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   352
    def __repr__(self):
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   353
        """String representation"""
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   354
        try:
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   355
            return socket.inet_ntoa(self.address)
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   356
        except:
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   357
            return self.address
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   358
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   359
class DNSHinfo(DNSRecord):
223
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    """A DNS host information record"""
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   361
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   362
    def __init__(self, name, type, clazz, ttl, cpu, os):
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        DNSRecord.__init__(self, name, type, clazz, ttl)
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   364
        self.cpu = cpu
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   365
        self.os = os
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   366
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   367
    def write(self, out):
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        """Used in constructing an outgoing packet"""
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   369
        out.writeString(self.cpu, len(self.cpu))
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   370
        out.writeString(self.os, len(self.os))
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   371
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   372
    def __eq__(self, other):
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   373
        """Tests equality on cpu and os"""
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   374
        if isinstance(other, DNSHinfo):
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   375
            return self.cpu == other.cpu and self.os == other.os
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   376
        return 0
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   377
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   378
    def __repr__(self):
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   379
        """String representation"""
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   380
        return self.cpu + " " + self.os
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diff changeset
   381
    
203
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class DNSPointer(DNSRecord):
223
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   383
    """A DNS pointer record"""
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   384
    
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   385
    def __init__(self, name, type, clazz, ttl, alias):
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        DNSRecord.__init__(self, name, type, clazz, ttl)
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   387
        self.alias = alias
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   388
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   389
    def write(self, out):
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   390
        """Used in constructing an outgoing packet"""
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   391
        out.writeName(self.alias)
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parents: 203
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   392
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   393
    def __eq__(self, other):
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   394
        """Tests equality on alias"""
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parents: 203
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   395
        if isinstance(other, DNSPointer):
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   396
            return self.alias == other.alias
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   397
        return 0
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   398
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   399
    def __repr__(self):
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   400
        """String representation"""
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   401
        return self.toString(self.alias)
203
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   402
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   403
class DNSText(DNSRecord):
223
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   404
    """A DNS text record"""
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parents: 203
diff changeset
   405
    
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   406
    def __init__(self, name, type, clazz, ttl, text):
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   407
        DNSRecord.__init__(self, name, type, clazz, ttl)
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   408
        self.text = text
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diff changeset
   409
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   410
    def write(self, out):
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   411
        """Used in constructing an outgoing packet"""
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   412
        out.writeString(self.text, len(self.text))
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parents: 203
diff changeset
   413
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parents: 203
diff changeset
   414
    def __eq__(self, other):
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   415
        """Tests equality on text"""
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parents: 203
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   416
        if isinstance(other, DNSText):
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   417
            return self.text == other.text
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   418
        return 0
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   419
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   420
    def __repr__(self):
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   421
        """String representation"""
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   422
        if len(self.text) > 10:
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   423
            return self.toString(self.text[:7] + "...")
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   424
        else:
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   425
            return self.toString(self.text)
203
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   426
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   427
class DNSService(DNSRecord):
223
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   428
    """A DNS service record"""
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parents: 203
diff changeset
   429
    
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   430
    def __init__(self, name, type, clazz, ttl, priority, weight, port, server):
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   431
        DNSRecord.__init__(self, name, type, clazz, ttl)
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   432
        self.priority = priority
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   433
        self.weight = weight
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   434
        self.port = port
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   435
        self.server = server
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diff changeset
   436
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diff changeset
   437
    def write(self, out):
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parents: 203
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   438
        """Used in constructing an outgoing packet"""
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parents: 203
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   439
        out.writeShort(self.priority)
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parents: 203
diff changeset
   440
        out.writeShort(self.weight)
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parents: 203
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   441
        out.writeShort(self.port)
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parents: 203
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   442
        out.writeName(self.server)
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parents: 203
diff changeset
   443
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parents: 203
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   444
    def __eq__(self, other):
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parents: 203
diff changeset
   445
        """Tests equality on priority, weight, port and server"""
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parents: 203
diff changeset
   446
        if isinstance(other, DNSService):
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diff changeset
   447
            return self.priority == other.priority and self.weight == other.weight and self.port == other.port and self.server == other.server
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   448
        return 0
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diff changeset
   449
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   450
    def __repr__(self):
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   451
        """String representation"""
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parents: 203
diff changeset
   452
        return self.toString("%s:%s" % (self.server, self.port))
203
cb9901076a21 Added concepts :
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parents:
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   453
cb9901076a21 Added concepts :
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parents:
diff changeset
   454
class DNSIncoming(object):
223
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   455
    """Object representation of an incoming DNS packet"""
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parents: 203
diff changeset
   456
    
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   457
    def __init__(self, data):
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   458
        """Constructor from string holding bytes of packet"""
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diff changeset
   459
        self.offset = 0
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diff changeset
   460
        self.data = data
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   461
        self.questions = []
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diff changeset
   462
        self.answers = []
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diff changeset
   463
        self.numQuestions = 0
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parents: 203
diff changeset
   464
        self.numAnswers = 0
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diff changeset
   465
        self.numAuthorities = 0
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parents: 203
diff changeset
   466
        self.numAdditionals = 0
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parents: 203
diff changeset
   467
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
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diff changeset
   468
        self.readHeader()
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parents: 203
diff changeset
   469
        self.readQuestions()
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parents: 203
diff changeset
   470
        self.readOthers()
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parents: 203
diff changeset
   471
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
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diff changeset
   472
    def readHeader(self):
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diff changeset
   473
        """Reads header portion of packet"""
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parents: 203
diff changeset
   474
        format = '!HHHHHH'
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parents: 203
diff changeset
   475
        length = struct.calcsize(format)
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parents: 203
diff changeset
   476
        info = struct.unpack(format, self.data[self.offset:self.offset+length])
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parents: 203
diff changeset
   477
        self.offset += length
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parents: 203
diff changeset
   478
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
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parents: 203
diff changeset
   479
        self.id = info[0]
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etisserant
parents: 203
diff changeset
   480
        self.flags = info[1]
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parents: 203
diff changeset
   481
        self.numQuestions = info[2]
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parents: 203
diff changeset
   482
        self.numAnswers = info[3]
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parents: 203
diff changeset
   483
        self.numAuthorities = info[4]
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parents: 203
diff changeset
   484
        self.numAdditionals = info[5]
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parents: 203
diff changeset
   485
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
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parents: 203
diff changeset
   486
    def readQuestions(self):
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parents: 203
diff changeset
   487
        """Reads questions section of packet"""
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parents: 203
diff changeset
   488
        format = '!HH'
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parents: 203
diff changeset
   489
        length = struct.calcsize(format)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   490
        for i in range(0, self.numQuestions):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   491
            name = self.readName()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   492
            info = struct.unpack(format, self.data[self.offset:self.offset+length])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   493
            self.offset += length
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   494
            
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   495
            question = DNSQuestion(name, info[0], info[1])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   496
            self.questions.append(question)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   497
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   498
    def readInt(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   499
        """Reads an integer from the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   500
        format = '!I'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   501
        length = struct.calcsize(format)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   502
        info = struct.unpack(format, self.data[self.offset:self.offset+length])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   503
        self.offset += length
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   504
        return info[0]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   505
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   506
    def readCharacterString(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   507
        """Reads a character string from the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   508
        length = ord(self.data[self.offset])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   509
        self.offset += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   510
        return self.readString(length)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   511
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   512
    def readString(self, len):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   513
        """Reads a string of a given length from the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   514
        format = '!' + str(len) + 's'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   515
        length =  struct.calcsize(format)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   516
        info = struct.unpack(format, self.data[self.offset:self.offset+length])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   517
        self.offset += length
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   518
        return info[0]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   519
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   520
    def readUnsignedShort(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   521
        """Reads an unsigned short from the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   522
        format = '!H'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   523
        length = struct.calcsize(format)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   524
        info = struct.unpack(format, self.data[self.offset:self.offset+length])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   525
        self.offset += length
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   526
        return info[0]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   527
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   528
    def readOthers(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   529
        """Reads the answers, authorities and additionals section of the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   530
        format = '!HHiH'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   531
        length = struct.calcsize(format)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   532
        n = self.numAnswers + self.numAuthorities + self.numAdditionals
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   533
        for i in range(0, n):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   534
            domain = self.readName()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   535
            info = struct.unpack(format, self.data[self.offset:self.offset+length])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   536
            self.offset += length
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   537
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   538
            rec = None
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   539
            if info[0] == _TYPE_A:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   540
                rec = DNSAddress(domain, info[0], info[1], info[2], self.readString(4))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   541
            elif info[0] == _TYPE_CNAME or info[0] == _TYPE_PTR:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   542
                rec = DNSPointer(domain, info[0], info[1], info[2], self.readName())
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   543
            elif info[0] == _TYPE_TXT:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   544
                rec = DNSText(domain, info[0], info[1], info[2], self.readString(info[3]))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   545
            elif info[0] == _TYPE_SRV:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   546
                rec = DNSService(domain, info[0], info[1], info[2], self.readUnsignedShort(), self.readUnsignedShort(), self.readUnsignedShort(), self.readName())
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   547
            elif info[0] == _TYPE_HINFO:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   548
                rec = DNSHinfo(domain, info[0], info[1], info[2], self.readCharacterString(), self.readCharacterString())
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   549
            elif info[0] == _TYPE_AAAA:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   550
                rec = DNSAddress(domain, info[0], info[1], info[2], self.readString(16))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   551
            else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   552
                # Try to ignore types we don't know about
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   553
                # this may mean the rest of the name is
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   554
                # unable to be parsed, and may show errors
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   555
                # so this is left for debugging.  New types
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   556
                # encountered need to be parsed properly.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   557
                #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   558
                #print "UNKNOWN TYPE = " + str(info[0])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   559
                #raise BadTypeInNameException
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   560
                pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   561
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   562
            if rec is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   563
                self.answers.append(rec)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   564
                
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   565
    def isQuery(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   566
        """Returns true if this is a query"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   567
        return (self.flags & _FLAGS_QR_MASK) == _FLAGS_QR_QUERY
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   568
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   569
    def isResponse(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   570
        """Returns true if this is a response"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   571
        return (self.flags & _FLAGS_QR_MASK) == _FLAGS_QR_RESPONSE
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   572
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   573
    def readUTF(self, offset, len):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   574
        """Reads a UTF-8 string of a given length from the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   575
        result = self.data[offset:offset+len].decode('utf-8')
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   576
        return result
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   577
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   578
    def readName(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   579
        """Reads a domain name from the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   580
        result = ''
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   581
        off = self.offset
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   582
        next = -1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   583
        first = off
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   584
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   585
        while 1:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   586
            len = ord(self.data[off])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   587
            off += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   588
            if len == 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   589
                break
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   590
            t = len & 0xC0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   591
            if t == 0x00:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   592
                result = ''.join((result, self.readUTF(off, len) + '.'))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   593
                off += len
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   594
            elif t == 0xC0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   595
                if next < 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   596
                    next = off + 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   597
                off = ((len & 0x3F) << 8) | ord(self.data[off])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   598
                if off >= first:
361
331d698e1118 Adding support for internationalization
laurent
parents: 223
diff changeset
   599
                    raise _("Bad domain name (circular) at ") + str(off)
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   600
                first = off
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   601
            else:
361
331d698e1118 Adding support for internationalization
laurent
parents: 223
diff changeset
   602
                raise _("Bad domain name at ") + str(off)
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   603
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   604
        if next >= 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   605
            self.offset = next
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   606
        else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   607
            self.offset = off
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   608
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   609
        return result
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   610
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   611
        
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   612
class DNSOutgoing(object):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   613
    """Object representation of an outgoing packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   614
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   615
    def __init__(self, flags, multicast = 1):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   616
        self.finished = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   617
        self.id = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   618
        self.multicast = multicast
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   619
        self.flags = flags
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   620
        self.names = {}
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   621
        self.data = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   622
        self.size = 12
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   623
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   624
        self.questions = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   625
        self.answers = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   626
        self.authorities = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   627
        self.additionals = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   628
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   629
    def addQuestion(self, record):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   630
        """Adds a question"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   631
        self.questions.append(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   632
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   633
    def addAnswer(self, inp, record):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   634
        """Adds an answer"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   635
        if not record.suppressedBy(inp):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   636
            self.addAnswerAtTime(record, 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   637
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   638
    def addAnswerAtTime(self, record, now):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   639
        """Adds an answer if if does not expire by a certain time"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   640
        if record is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   641
            if now == 0 or not record.isExpired(now):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   642
                self.answers.append((record, now))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   643
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   644
    def addAuthorativeAnswer(self, record):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   645
        """Adds an authoritative answer"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   646
        self.authorities.append(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   647
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   648
    def addAdditionalAnswer(self, record):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   649
        """Adds an additional answer"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   650
        self.additionals.append(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   651
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   652
    def writeByte(self, value):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   653
        """Writes a single byte to the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   654
        format = '!c'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   655
        self.data.append(struct.pack(format, chr(value)))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   656
        self.size += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   657
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   658
    def insertShort(self, index, value):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   659
        """Inserts an unsigned short in a certain position in the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   660
        format = '!H'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   661
        self.data.insert(index, struct.pack(format, value))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   662
        self.size += 2
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   663
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   664
    def writeShort(self, value):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   665
        """Writes an unsigned short to the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   666
        format = '!H'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   667
        self.data.append(struct.pack(format, value))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   668
        self.size += 2
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   669
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   670
    def writeInt(self, value):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   671
        """Writes an unsigned integer to the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   672
        format = '!I'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   673
        self.data.append(struct.pack(format, int(value)))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   674
        self.size += 4
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   675
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   676
    def writeString(self, value, length):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   677
        """Writes a string to the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   678
        format = '!' + str(length) + 's'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   679
        self.data.append(struct.pack(format, value))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   680
        self.size += length
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   681
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   682
    def writeUTF(self, s):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   683
        """Writes a UTF-8 string of a given length to the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   684
        utfstr = s.encode('utf-8')
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   685
        length = len(utfstr)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   686
        if length > 64:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   687
            raise NamePartTooLongException
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   688
        self.writeByte(length)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   689
        self.writeString(utfstr, length)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   690
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   691
    def writeName(self, name):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   692
        """Writes a domain name to the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   693
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   694
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   695
            # Find existing instance of this name in packet
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   696
            #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   697
            index = self.names[name]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   698
        except KeyError:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   699
            # No record of this name already, so write it
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   700
            # out as normal, recording the location of the name
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   701
            # for future pointers to it.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   702
            #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   703
            self.names[name] = self.size
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   704
            parts = name.split('.')
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   705
            if parts[-1] == '':
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   706
                parts = parts[:-1]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   707
            for part in parts:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   708
                self.writeUTF(part)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   709
            self.writeByte(0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   710
            return
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   711
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   712
        # An index was found, so write a pointer to it
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   713
        #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   714
        self.writeByte((index >> 8) | 0xC0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   715
        self.writeByte(index)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   716
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   717
    def writeQuestion(self, question):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   718
        """Writes a question to the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   719
        self.writeName(question.name)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   720
        self.writeShort(question.type)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   721
        self.writeShort(question.clazz)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   722
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   723
    def writeRecord(self, record, now):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   724
        """Writes a record (answer, authoritative answer, additional) to
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   725
        the packet"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   726
        self.writeName(record.name)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   727
        self.writeShort(record.type)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   728
        if record.unique and self.multicast:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   729
            self.writeShort(record.clazz | _CLASS_UNIQUE)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   730
        else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   731
            self.writeShort(record.clazz)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   732
        if now == 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   733
            self.writeInt(record.ttl)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   734
        else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   735
            self.writeInt(record.getRemainingTTL(now))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   736
        index = len(self.data)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   737
        # Adjust size for the short we will write before this record
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   738
        #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   739
        self.size += 2
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   740
        record.write(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   741
        self.size -= 2
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   742
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   743
        length = len(''.join(self.data[index:]))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   744
        self.insertShort(index, length) # Here is the short we adjusted for
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   745
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   746
    def packet(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   747
        """Returns a string containing the packet's bytes
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   748
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   749
        No further parts should be added to the packet once this
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   750
        is done."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   751
        if not self.finished:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   752
            self.finished = 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   753
            for question in self.questions:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   754
                self.writeQuestion(question)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   755
            for answer, time in self.answers:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   756
                self.writeRecord(answer, time)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   757
            for authority in self.authorities:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   758
                self.writeRecord(authority, 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   759
            for additional in self.additionals:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   760
                self.writeRecord(additional, 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   761
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   762
            self.insertShort(0, len(self.additionals))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   763
            self.insertShort(0, len(self.authorities))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   764
            self.insertShort(0, len(self.answers))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   765
            self.insertShort(0, len(self.questions))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   766
            self.insertShort(0, self.flags)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   767
            if self.multicast:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   768
                self.insertShort(0, 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   769
            else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   770
                self.insertShort(0, self.id)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   771
        return ''.join(self.data)
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   772
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   773
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   774
class DNSCache(object):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   775
    """A cache of DNS entries"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   776
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   777
    def __init__(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   778
        self.cache = {}
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   779
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   780
    def add(self, entry):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   781
        """Adds an entry"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   782
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   783
            list = self.cache[entry.key]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   784
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   785
            list = self.cache[entry.key] = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   786
        list.append(entry)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   787
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   788
    def remove(self, entry):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   789
        """Removes an entry"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   790
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   791
            list = self.cache[entry.key]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   792
            list.remove(entry)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   793
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   794
            pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   795
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   796
    def get(self, entry):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   797
        """Gets an entry by key.  Will return None if there is no
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   798
        matching entry."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   799
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   800
            list = self.cache[entry.key]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   801
            return list[list.index(entry)]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   802
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   803
            return None
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   804
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   805
    def getByDetails(self, name, type, clazz):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   806
        """Gets an entry by details.  Will return None if there is
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   807
        no matching entry."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   808
        entry = DNSEntry(name, type, clazz)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   809
        return self.get(entry)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   810
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   811
    def entriesWithName(self, name):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   812
        """Returns a list of entries whose key matches the name."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   813
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   814
            return self.cache[name]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   815
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   816
            return []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   817
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   818
    def entries(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   819
        """Returns a list of all entries"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   820
        def add(x, y): return x+y
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   821
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   822
            return reduce(add, self.cache.values())
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   823
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   824
            return []
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   825
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   826
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   827
class Engine(threading.Thread):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   828
    """An engine wraps read access to sockets, allowing objects that
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   829
    need to receive data from sockets to be called back when the
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   830
    sockets are ready.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   831
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   832
    A reader needs a handle_read() method, which is called when the socket
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   833
    it is interested in is ready for reading.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   834
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   835
    Writers are not implemented here, because we only send short
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   836
    packets.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   837
    """
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   838
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   839
    def __init__(self, zeroconf):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   840
        threading.Thread.__init__(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   841
        self.zeroconf = zeroconf
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   842
        self.readers = {} # maps socket to reader
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   843
        self.timeout = 5
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   844
        self.condition = threading.Condition()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   845
        self.start()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   846
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   847
    def run(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   848
        while not globals()['_GLOBAL_DONE']:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   849
            rs = self.getReaders()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   850
            if len(rs) == 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   851
                # No sockets to manage, but we wait for the timeout
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   852
                # or addition of a socket
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   853
                #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   854
                self.condition.acquire()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   855
                self.condition.wait(self.timeout)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   856
                self.condition.release()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   857
            else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   858
                try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   859
                    rr, wr, er = select.select(rs, [], [], self.timeout)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   860
                    for socket in rr:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   861
                        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   862
                            self.readers[socket].handle_read()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   863
                        except:
644
b511cab580eb Better naming of IP address related variables in Beremiz_service.py, Ignore errors that occur on shutdown in Zeroconf.py, fixed discovery dialog crash due to asynchronous call from zeroconf
Edouard Tisserant
parents: 379
diff changeset
   864
                            # Ignore errors that occur on shutdown
b511cab580eb Better naming of IP address related variables in Beremiz_service.py, Ignore errors that occur on shutdown in Zeroconf.py, fixed discovery dialog crash due to asynchronous call from zeroconf
Edouard Tisserant
parents: 379
diff changeset
   865
                            pass
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   866
                except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   867
                    pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   868
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   869
    def getReaders(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   870
        result = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   871
        self.condition.acquire()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   872
        result = self.readers.keys()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   873
        self.condition.release()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   874
        return result
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   875
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   876
    def addReader(self, reader, socket):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   877
        self.condition.acquire()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   878
        self.readers[socket] = reader
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   879
        self.condition.notify()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   880
        self.condition.release()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   881
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   882
    def delReader(self, socket):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   883
        self.condition.acquire()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   884
        del(self.readers[socket])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   885
        self.condition.notify()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   886
        self.condition.release()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   887
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   888
    def notify(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   889
        self.condition.acquire()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   890
        self.condition.notify()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   891
        self.condition.release()
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   892
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   893
class Listener(object):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   894
    """A Listener is used by this module to listen on the multicast
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   895
    group to which DNS messages are sent, allowing the implementation
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   896
    to cache information as it arrives.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   897
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   898
    It requires registration with an Engine object in order to have
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   899
    the read() method called when a socket is availble for reading."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   900
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   901
    def __init__(self, zeroconf):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   902
        self.zeroconf = zeroconf
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   903
        self.zeroconf.engine.addReader(self, self.zeroconf.socket)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   904
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   905
    def handle_read(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   906
        data, (addr, port) = self.zeroconf.socket.recvfrom(_MAX_MSG_ABSOLUTE)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   907
        self.data = data
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   908
        msg = DNSIncoming(data)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   909
        if msg.isQuery():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   910
            # Always multicast responses
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   911
            #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   912
            if port == _MDNS_PORT:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   913
                self.zeroconf.handleQuery(msg, _MDNS_ADDR, _MDNS_PORT)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   914
            # If it's not a multicast query, reply via unicast
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   915
            # and multicast
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   916
            #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   917
            elif port == _DNS_PORT:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   918
                self.zeroconf.handleQuery(msg, addr, port)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   919
                self.zeroconf.handleQuery(msg, _MDNS_ADDR, _MDNS_PORT)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   920
        else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   921
            self.zeroconf.handleResponse(msg)
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   922
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   923
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   924
class Reaper(threading.Thread):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   925
    """A Reaper is used by this module to remove cache entries that
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   926
    have expired."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   927
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   928
    def __init__(self, zeroconf):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   929
        threading.Thread.__init__(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   930
        self.zeroconf = zeroconf
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   931
        self.start()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   932
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   933
    def run(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   934
        while 1:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   935
            self.zeroconf.wait(10 * 1000)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   936
            if globals()['_GLOBAL_DONE']:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   937
                return
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   938
            now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   939
            for record in self.zeroconf.cache.entries():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   940
                if record.isExpired(now):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   941
                    self.zeroconf.updateRecord(now, record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   942
                    self.zeroconf.cache.remove(record)
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   943
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   944
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
   945
class ServiceBrowser(threading.Thread):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   946
    """Used to browse for a service of a specific type.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   947
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   948
    The listener object will have its addService() and
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   949
    removeService() methods called when this browser
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   950
    discovers changes in the services availability."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   951
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   952
    def __init__(self, zeroconf, type, listener):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   953
        """Creates a browser for a specific type"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   954
        threading.Thread.__init__(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   955
        self.zeroconf = zeroconf
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   956
        self.type = type
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   957
        self.listener = listener
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   958
        self.services = {}
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   959
        self.nextTime = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   960
        self.delay = _BROWSER_TIME
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   961
        self.list = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   962
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   963
        self.done = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   964
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   965
        self.zeroconf.addListener(self, DNSQuestion(self.type, _TYPE_PTR, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   966
        self.start()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   967
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   968
    def updateRecord(self, zeroconf, now, record):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   969
        """Callback invoked by Zeroconf when new information arrives.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   970
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   971
        Updates information required by browser in the Zeroconf cache."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   972
        if record.type == _TYPE_PTR and record.name == self.type:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   973
            expired = record.isExpired(now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   974
            try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   975
                oldrecord = self.services[record.alias.lower()]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   976
                if not expired:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   977
                    oldrecord.resetTTL(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   978
                else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   979
                    del(self.services[record.alias.lower()])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   980
                    callback = lambda x: self.listener.removeService(x, self.type, record.alias)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   981
                    self.list.append(callback)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   982
                    return
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   983
            except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   984
                if not expired:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   985
                    self.services[record.alias.lower()] = record
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   986
                    callback = lambda x: self.listener.addService(x, self.type, record.alias)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   987
                    self.list.append(callback)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   988
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   989
            expires = record.getExpirationTime(75)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   990
            if expires < self.nextTime:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   991
                self.nextTime = expires
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   992
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   993
    def cancel(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   994
        self.done = 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   995
        self.zeroconf.notifyAll()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   996
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   997
    def run(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   998
        while 1:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
   999
            event = None
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1000
            now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1001
            if len(self.list) == 0 and self.nextTime > now:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1002
                self.zeroconf.wait(self.nextTime - now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1003
            if globals()['_GLOBAL_DONE'] or self.done:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1004
                return
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1005
            now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1006
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1007
            if self.nextTime <= now:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1008
                out = DNSOutgoing(_FLAGS_QR_QUERY)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1009
                out.addQuestion(DNSQuestion(self.type, _TYPE_PTR, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1010
                for record in self.services.values():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1011
                    if not record.isExpired(now):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1012
                        out.addAnswerAtTime(record, now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1013
                self.zeroconf.send(out)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1014
                self.nextTime = now + self.delay
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1015
                self.delay = min(20 * 1000, self.delay * 2)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1016
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1017
            if len(self.list) > 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1018
                event = self.list.pop(0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1019
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1020
            if event is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1021
                event(self.zeroconf)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1022
                
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
  1023
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
  1024
class ServiceInfo(object):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1025
    """Service information"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1026
    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1027
    def __init__(self, type, name, address=None, port=None, weight=0, priority=0, properties=None, server=None):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1028
        """Create a service description.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1029
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1030
        type: fully qualified service type name
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1031
        name: fully qualified service name
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1032
        address: IP address as unsigned short, network byte order
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1033
        port: port that the service runs on
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1034
        weight: weight of the service
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1035
        priority: priority of the service
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1036
        properties: dictionary of properties (or a string holding the bytes for the text field)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1037
        server: fully qualified name for service host (defaults to name)"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1038
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1039
        if not name.endswith(type):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1040
            raise BadTypeInNameException
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1041
        self.type = type
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1042
        self.name = name
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1043
        self.address = address
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1044
        self.port = port
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1045
        self.weight = weight
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1046
        self.priority = priority
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1047
        if server:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1048
            self.server = server
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1049
        else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1050
            self.server = name
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1051
        self.setProperties(properties)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1052
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1053
    def setProperties(self, properties):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1054
        """Sets properties and text of this info from a dictionary"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1055
        if isinstance(properties, dict):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1056
            self.properties = properties
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1057
            list = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1058
            result = ''
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1059
            for key in properties:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1060
                value = properties[key]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1061
                if value is None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1062
                    suffix = ''.encode('utf-8')
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1063
                elif isinstance(value, str):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1064
                    suffix = value.encode('utf-8')
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1065
                elif isinstance(value, int):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1066
                    if value:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1067
                        suffix = 'true'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1068
                    else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1069
                        suffix = 'false'
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1070
                else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1071
                    suffix = ''.encode('utf-8')
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1072
                list.append('='.join((key, suffix)))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1073
            for item in list:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1074
                result = ''.join((result, struct.pack('!c', chr(len(item))), item))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1075
            self.text = result
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1076
        else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1077
            self.text = properties
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1078
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1079
    def setText(self, text):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1080
        """Sets properties and text given a text field"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1081
        self.text = text
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1082
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1083
            result = {}
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1084
            end = len(text)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1085
            index = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1086
            strs = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1087
            while index < end:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1088
                length = ord(text[index])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1089
                index += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1090
                strs.append(text[index:index+length])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1091
                index += length
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1092
            
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1093
            for s in strs:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1094
                eindex = s.find('=')
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1095
                if eindex == -1:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1096
                    # No equals sign at all
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1097
                    key = s
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1098
                    value = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1099
                else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1100
                    key = s[:eindex]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1101
                    value = s[eindex+1:]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1102
                    if value == 'true':
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1103
                        value = 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1104
                    elif value == 'false' or not value:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1105
                        value = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1106
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1107
                # Only update non-existent properties
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1108
                if key and result.get(key) == None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1109
                    result[key] = value
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1110
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1111
            self.properties = result
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1112
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1113
            traceback.print_exc()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1114
            self.properties = None
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1115
            
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1116
    def getType(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1117
        """Type accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1118
        return self.type
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1119
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1120
    def getName(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1121
        """Name accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1122
        if self.type is not None and self.name.endswith("." + self.type):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1123
            return self.name[:len(self.name) - len(self.type) - 1]
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1124
        return self.name
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1125
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1126
    def getAddress(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1127
        """Address accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1128
        return self.address
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1129
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1130
    def getPort(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1131
        """Port accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1132
        return self.port
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1133
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1134
    def getPriority(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1135
        """Pirority accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1136
        return self.priority
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1137
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1138
    def getWeight(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1139
        """Weight accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1140
        return self.weight
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1141
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1142
    def getProperties(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1143
        """Properties accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1144
        return self.properties
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1145
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1146
    def getText(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1147
        """Text accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1148
        return self.text
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1149
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1150
    def getServer(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1151
        """Server accessor"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1152
        return self.server
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1153
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1154
    def updateRecord(self, zeroconf, now, record):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1155
        """Updates service information from a DNS record"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1156
        if record is not None and not record.isExpired(now):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1157
            if record.type == _TYPE_A:
373
a7f26d9f214f fix pyZeroconf bug where getServiceInfo returns None.
b.taylor@willowglen.ca
parents: 223
diff changeset
  1158
                if record.name == self.server:
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1159
                    self.address = record.address
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1160
            elif record.type == _TYPE_SRV:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1161
                if record.name == self.name:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1162
                    self.server = record.server
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1163
                    self.port = record.port
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1164
                    self.weight = record.weight
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1165
                    self.priority = record.priority
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1166
                    self.updateRecord(zeroconf, now, zeroconf.cache.getByDetails(self.server, _TYPE_A, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1167
            elif record.type == _TYPE_TXT:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1168
                if record.name == self.name:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1169
                    self.setText(record.text)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1170
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1171
    def request(self, zeroconf, timeout):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1172
        """Returns true if the service could be discovered on the
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1173
        network, and updates this object with details discovered.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1174
        """
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1175
        now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1176
        delay = _LISTENER_TIME
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1177
        next = now + delay
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1178
        last = now + timeout
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1179
        result = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1180
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1181
            zeroconf.addListener(self, DNSQuestion(self.name, _TYPE_ANY, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1182
            while self.server is None or self.address is None or self.text is None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1183
                if last <= now:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1184
                    return 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1185
                if next <= now:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1186
                    out = DNSOutgoing(_FLAGS_QR_QUERY)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1187
                    out.addQuestion(DNSQuestion(self.name, _TYPE_SRV, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1188
                    out.addAnswerAtTime(zeroconf.cache.getByDetails(self.name, _TYPE_SRV, _CLASS_IN), now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1189
                    out.addQuestion(DNSQuestion(self.name, _TYPE_TXT, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1190
                    out.addAnswerAtTime(zeroconf.cache.getByDetails(self.name, _TYPE_TXT, _CLASS_IN), now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1191
                    if self.server is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1192
                        out.addQuestion(DNSQuestion(self.server, _TYPE_A, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1193
                        out.addAnswerAtTime(zeroconf.cache.getByDetails(self.server, _TYPE_A, _CLASS_IN), now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1194
                    zeroconf.send(out)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1195
                    next = now + delay
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1196
                    delay = delay * 2
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1197
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1198
                zeroconf.wait(min(next, last) - now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1199
                now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1200
            result = 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1201
        finally:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1202
            zeroconf.removeListener(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1203
            
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1204
        return result
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1205
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1206
    def __eq__(self, other):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1207
        """Tests equality of service name"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1208
        if isinstance(other, ServiceInfo):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1209
            return other.name == self.name
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1210
        return 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1211
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1212
    def __ne__(self, other):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1213
        """Non-equality test"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1214
        return not self.__eq__(other)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1215
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1216
    def __repr__(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1217
        """String representation"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1218
        result = "service[%s,%s:%s," % (self.name, socket.inet_ntoa(self.getAddress()), self.port)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1219
        if self.text is None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1220
            result += "None"
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1221
        else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1222
            if len(self.text) < 20:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1223
                result += self.text
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1224
            else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1225
                result += self.text[:17] + "..."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1226
        result += "]"
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1227
        return result
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1228
                
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
  1229
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
  1230
class Zeroconf(object):
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1231
    """Implementation of Zeroconf Multicast DNS Service Discovery
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1232
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1233
    Supports registration, unregistration, queries and browsing.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1234
    """
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1235
    def __init__(self, bindaddress=None):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1236
        """Creates an instance of the Zeroconf class, establishing
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1237
        multicast communications, listening and reaping threads."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1238
        globals()['_GLOBAL_DONE'] = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1239
        self.intf = bindaddress
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1240
        self.group = ('', _MDNS_PORT)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1241
        self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1242
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1243
            self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1244
            self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1245
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1246
            # SO_REUSEADDR should be equivalent to SO_REUSEPORT for
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1247
            # multicast UDP sockets (p 731, "TCP/IP Illustrated,
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1248
            # Volume 2"), but some BSD-derived systems require
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1249
            # SO_REUSEPORT to be specified explicity.  Also, not all
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1250
            # versions of Python have SO_REUSEPORT available.  So
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1251
            # if you're on a BSD-based system, and haven't upgraded
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1252
            # to Python 2.3 yet, you may find this library doesn't
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1253
            # work as expected.
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1254
            #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1255
            pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1256
        self.socket.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_TTL, 255)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1257
        self.socket.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_LOOP, 1)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1258
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1259
            self.socket.bind(self.group)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1260
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1261
            # Some versions of linux raise an exception even though
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1262
            # the SO_REUSE* options have been set, so ignore it
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1263
            #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1264
            pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1265
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1266
        if self.intf is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1267
            self.socket.setsockopt(socket.SOL_IP, socket.IP_MULTICAST_IF, socket.inet_aton(self.intf) + socket.inet_aton('0.0.0.0'))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1268
        self.socket.setsockopt(socket.SOL_IP, socket.IP_ADD_MEMBERSHIP, socket.inet_aton(_MDNS_ADDR) + socket.inet_aton('0.0.0.0'))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1269
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1270
        self.listeners = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1271
        self.browsers = []
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1272
        self.services = {}
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1273
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1274
        self.cache = DNSCache()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1275
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1276
        self.condition = threading.Condition()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1277
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1278
        self.engine = Engine(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1279
        self.listener = Listener(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1280
        self.reaper = Reaper(self)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1281
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1282
    def isLoopback(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1283
        if self.intf is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1284
            return self.intf.startswith("127.0.0.1")
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1285
        return False
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1286
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1287
    def isLinklocal(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1288
        if self.intf is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1289
            return self.intf.startswith("169.254.")
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1290
        return False
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1291
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1292
    def wait(self, timeout):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1293
        """Calling thread waits for a given number of milliseconds or
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1294
        until notified."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1295
        self.condition.acquire()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1296
        self.condition.wait(timeout/1000)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1297
        self.condition.release()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1298
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1299
    def notifyAll(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1300
        """Notifies all waiting threads"""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1301
        self.condition.acquire()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1302
        self.condition.notifyAll()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1303
        self.condition.release()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1304
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1305
    def getServiceInfo(self, type, name, timeout=3000):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1306
        """Returns network's service information for a particular
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1307
        name and type, or None if no service matches by the timeout,
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1308
        which defaults to 3 seconds."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1309
        info = ServiceInfo(type, name)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1310
        if info.request(self, timeout):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1311
            return info
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1312
        return None
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1313
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1314
    def addServiceListener(self, type, listener):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1315
        """Adds a listener for a particular service type.  This object
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1316
        will then have its updateRecord method called when information
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1317
        arrives for that type."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1318
        self.removeServiceListener(listener)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1319
        self.browsers.append(ServiceBrowser(self, type, listener))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1320
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1321
    def removeServiceListener(self, listener):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1322
        """Removes a listener from the set that is currently listening."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1323
        for browser in self.browsers:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1324
            if browser.listener == listener:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1325
                browser.cancel()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1326
                del(browser)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1327
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1328
    def registerService(self, info, ttl=_DNS_TTL):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1329
        """Registers service information to the network with a default TTL
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1330
        of 60 seconds.  Zeroconf will then respond to requests for
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1331
        information for that service.  The name of the service may be
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1332
        changed if needed to make it unique on the network."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1333
        self.checkService(info)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1334
        self.services[info.name.lower()] = info
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1335
        now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1336
        nextTime = now
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1337
        i = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1338
        while i < 3:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1339
            if now < nextTime:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1340
                self.wait(nextTime - now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1341
                now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1342
                continue
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1343
            out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1344
            out.addAnswerAtTime(DNSPointer(info.type, _TYPE_PTR, _CLASS_IN, ttl, info.name), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1345
            out.addAnswerAtTime(DNSService(info.name, _TYPE_SRV, _CLASS_IN, ttl, info.priority, info.weight, info.port, info.server), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1346
            out.addAnswerAtTime(DNSText(info.name, _TYPE_TXT, _CLASS_IN, ttl, info.text), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1347
            if info.address:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1348
                out.addAnswerAtTime(DNSAddress(info.server, _TYPE_A, _CLASS_IN, ttl, info.address), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1349
            self.send(out)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1350
            i += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1351
            nextTime += _REGISTER_TIME
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1352
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1353
    def unregisterService(self, info):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1354
        """Unregister a service."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1355
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1356
            del(self.services[info.name.lower()])
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1357
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1358
            pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1359
        now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1360
        nextTime = now
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1361
        i = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1362
        while i < 3:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1363
            if now < nextTime:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1364
                self.wait(nextTime - now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1365
                now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1366
                continue
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1367
            out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1368
            out.addAnswerAtTime(DNSPointer(info.type, _TYPE_PTR, _CLASS_IN, 0, info.name), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1369
            out.addAnswerAtTime(DNSService(info.name, _TYPE_SRV, _CLASS_IN, 0, info.priority, info.weight, info.port, info.name), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1370
            out.addAnswerAtTime(DNSText(info.name, _TYPE_TXT, _CLASS_IN, 0, info.text), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1371
            if info.address:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1372
                out.addAnswerAtTime(DNSAddress(info.server, _TYPE_A, _CLASS_IN, 0, info.address), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1373
            self.send(out)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1374
            i += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1375
            nextTime += _UNREGISTER_TIME
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1376
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1377
    def unregisterAllServices(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1378
        """Unregister all registered services."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1379
        if len(self.services) > 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1380
            now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1381
            nextTime = now
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1382
            i = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1383
            while i < 3:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1384
                if now < nextTime:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1385
                    self.wait(nextTime - now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1386
                    now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1387
                    continue
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1388
                out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1389
                for info in self.services.values():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1390
                    out.addAnswerAtTime(DNSPointer(info.type, _TYPE_PTR, _CLASS_IN, 0, info.name), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1391
                    out.addAnswerAtTime(DNSService(info.name, _TYPE_SRV, _CLASS_IN, 0, info.priority, info.weight, info.port, info.server), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1392
                    out.addAnswerAtTime(DNSText(info.name, _TYPE_TXT, _CLASS_IN, 0, info.text), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1393
                    if info.address:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1394
                        out.addAnswerAtTime(DNSAddress(info.server, _TYPE_A, _CLASS_IN, 0, info.address), 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1395
                self.send(out)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1396
                i += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1397
                nextTime += _UNREGISTER_TIME
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1398
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1399
    def checkService(self, info):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1400
        """Checks the network for a unique service name, modifying the
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1401
        ServiceInfo passed in if it is not unique."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1402
        now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1403
        nextTime = now
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1404
        i = 0
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1405
        while i < 3:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1406
            for record in self.cache.entriesWithName(info.type):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1407
                if record.type == _TYPE_PTR and not record.isExpired(now) and record.alias == info.name:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1408
                    if (info.name.find('.') < 0):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1409
                        info.name = info.name + ".[" + info.address + ":" + info.port + "]." + info.type
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1410
                        self.checkService(info)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1411
                        return
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1412
                    raise NonUniqueNameException
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1413
            if now < nextTime:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1414
                self.wait(nextTime - now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1415
                now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1416
                continue
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1417
            out = DNSOutgoing(_FLAGS_QR_QUERY | _FLAGS_AA)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1418
            self.debug = out
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1419
            out.addQuestion(DNSQuestion(info.type, _TYPE_PTR, _CLASS_IN))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1420
            out.addAuthorativeAnswer(DNSPointer(info.type, _TYPE_PTR, _CLASS_IN, _DNS_TTL, info.name))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1421
            self.send(out)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1422
            i += 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1423
            nextTime += _CHECK_TIME
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1424
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1425
    def addListener(self, listener, question):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1426
        """Adds a listener for a given question.  The listener will have
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1427
        its updateRecord method called when information is available to
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1428
        answer the question."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1429
        now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1430
        self.listeners.append(listener)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1431
        if question is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1432
            for record in self.cache.entriesWithName(question.name):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1433
                if question.answeredBy(record) and not record.isExpired(now):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1434
                    listener.updateRecord(self, now, record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1435
        self.notifyAll()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1436
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1437
    def removeListener(self, listener):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1438
        """Removes a listener."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1439
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1440
            self.listeners.remove(listener)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1441
            self.notifyAll()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1442
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1443
            pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1444
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1445
    def updateRecord(self, now, rec):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1446
        """Used to notify listeners of new information that has updated
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1447
        a record."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1448
        for listener in self.listeners:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1449
            listener.updateRecord(self, now, rec)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1450
        self.notifyAll()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1451
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1452
    def handleResponse(self, msg):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1453
        """Deal with incoming response packets.  All answers
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1454
        are held in the cache, and listeners are notified."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1455
        now = currentTimeMillis()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1456
        for record in msg.answers:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1457
            expired = record.isExpired(now)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1458
            if record in self.cache.entries():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1459
                if expired:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1460
                    self.cache.remove(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1461
                else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1462
                    entry = self.cache.get(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1463
                    if entry is not None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1464
                        entry.resetTTL(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1465
                        record = entry
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1466
            else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1467
                self.cache.add(record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1468
                
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1469
            self.updateRecord(now, record)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1470
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1471
    def handleQuery(self, msg, addr, port):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1472
        """Deal with incoming query packets.  Provides a response if
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1473
        possible."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1474
        out = None
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1475
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1476
        # Support unicast client responses
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1477
        #
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1478
        if port != _MDNS_PORT:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1479
            out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA, 0)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1480
            for question in msg.questions:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1481
                out.addQuestion(question)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1482
        
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1483
        for question in msg.questions:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1484
            if question.type == _TYPE_PTR:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1485
                for service in self.services.values():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1486
                    if question.name == service.type:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1487
                        if out is None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1488
                            out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1489
                        out.addAnswer(msg, DNSPointer(service.type, _TYPE_PTR, _CLASS_IN, _DNS_TTL, service.name))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1490
            else:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1491
                try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1492
                    if out is None:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1493
                        out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1494
                    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1495
                    # Answer A record queries for any service addresses we know
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1496
                    if question.type == _TYPE_A or question.type == _TYPE_ANY:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1497
                        for service in self.services.values():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1498
                            if service.server == question.name.lower():
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1499
                                out.addAnswer(msg, DNSAddress(question.name, _TYPE_A, _CLASS_IN | _CLASS_UNIQUE, _DNS_TTL, service.address))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1500
                    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1501
                    service = self.services.get(question.name.lower(), None)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1502
                    if not service: continue
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1503
                    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1504
                    if question.type == _TYPE_SRV or question.type == _TYPE_ANY:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1505
                        out.addAnswer(msg, DNSService(question.name, _TYPE_SRV, _CLASS_IN | _CLASS_UNIQUE, _DNS_TTL, service.priority, service.weight, service.port, service.server))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1506
                    if question.type == _TYPE_TXT or question.type == _TYPE_ANY:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1507
                        out.addAnswer(msg, DNSText(question.name, _TYPE_TXT, _CLASS_IN | _CLASS_UNIQUE, _DNS_TTL, service.text))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1508
                    if question.type == _TYPE_SRV:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1509
                        out.addAdditionalAnswer(DNSAddress(service.server, _TYPE_A, _CLASS_IN | _CLASS_UNIQUE, _DNS_TTL, service.address))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1510
                except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1511
                    traceback.print_exc()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1512
                
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1513
        if out is not None and out.answers:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1514
            out.id = msg.id
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1515
            self.send(out, addr, port)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1516
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1517
    def send(self, out, addr = _MDNS_ADDR, port = _MDNS_PORT):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1518
        """Sends an outgoing packet."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1519
        # This is a quick test to see if we can parse the packets we generate
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1520
        #temp = DNSIncoming(out.packet())
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1521
        try:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1522
            bytes_sent = self.socket.sendto(out.packet(), 0, (addr, port))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1523
        except:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1524
            # Ignore this, it may be a temporary loss of network connection
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1525
            pass
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1526
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1527
    def close(self):
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1528
        """Ends the background threads, and prevent this instance from
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1529
        servicing further queries."""
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1530
        if globals()['_GLOBAL_DONE'] == 0:
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1531
            globals()['_GLOBAL_DONE'] = 1
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1532
            self.notifyAll()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1533
            self.engine.notify()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1534
            self.unregisterAllServices()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1535
            self.socket.setsockopt(socket.SOL_IP, socket.IP_DROP_MEMBERSHIP, socket.inet_aton(_MDNS_ADDR) + socket.inet_aton('0.0.0.0'))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1536
            self.socket.close()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1537
            
203
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
  1538
# Test a few module features, including service registration, service
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
  1539
# query (for Zoe), and service unregistration.
cb9901076a21 Added concepts :
etisserant
parents:
diff changeset
  1540
223
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1541
if __name__ == '__main__':    
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1542
    print "Multicast DNS Service Discovery for Python, version", __version__
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1543
    r = Zeroconf()
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1544
    print "1. Testing registration of a service..."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1545
    desc = {'version':'0.10','a':'test value', 'b':'another value'}
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1546
    info = ServiceInfo("_http._tcp.local.", "My Service Name._http._tcp.local.", socket.inet_aton("127.0.0.1"), 1234, 0, 0, desc)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1547
    print "   Registering service..."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1548
    r.registerService(info)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1549
    print "   Registration done."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1550
    print "2. Testing query of service information..."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1551
    print "   Getting ZOE service:", str(r.getServiceInfo("_http._tcp.local.", "ZOE._http._tcp.local."))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1552
    print "   Query done."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1553
    print "3. Testing query of own service..."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1554
    print "   Getting self:", str(r.getServiceInfo("_http._tcp.local.", "My Service Name._http._tcp.local."))
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1555
    print "   Query done."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1556
    print "4. Testing unregister of service information..."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1557
    r.unregisterService(info)
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1558
    print "   Unregister done."
1c0d3aaacf3d Fixed bad bahavior when zeroconf bindaddress unspecified.
etisserant
parents: 203
diff changeset
  1559
    r.close()