git.meshlink.io Git - catta/blob - avahi-utils/avahi-publish

   1 #!/usr/bin/python2.4
   2 # -*-python-*-
   3 # $Id$
   4
   5 import avahi, dbus, gobject, sys, getopt
   6
   7 try:
   8     import dbus.glib
   9 except ImportError, e:
  10     pass
  11
  12 def usage(retval = 0):
  13     print "%s [options] <name> <type> <port> [<txt> ...]\n" % sys.argv[0]
  14     print "   -h --help      Show this help"
  15     print "   -d --domain    Domain where to register this service"
  16     print "   -H --host      Host where this service resides"
  17     sys.exit(retval)
  18
  19 try:
  20     opts, args = getopt.getopt(sys.argv[1:], "d:H:", ["help", "domain=", "host="])
  21 except getopt.GetoptError:
  22     usage(2)
  23
  24 domain = ""
  25 host = ""
  26
  27 for o, a in opts:
  28     if o in ("-h", "--help"):
  29         usage()
  30
  31     if o in ("-d", "--domain"):
  32         domain = a
  33
  34     if o in ("-H", "--host"):
  35         host = a
  36
  37 if len(args) < 3:
  38     sys.stderr.write("Invalid number of arguments\n")
  39     sys.exit(1)
  40
  41 name = args[0]
  42 stype = args[1]
  43 port = int(args[2])
  44 txt = args[3:]
  45
  46 # python-dbus doesn't allow transmission of empty arrays, therefore we "fix" it with a bogus entry
  47 if len(txt) == 0:
  48     txt.append("python-dbus=brain-damage")
  49
  50 group = None
  51
  52 def remove_service():
  53     global group
  54
  55     if not (group is None):
  56         group.Free()
  57         group = None
  58
  59 def add_service():
  60     global group, name, stype, domain, host, port, txt
  61
  62     assert group is None
  63
  64     print "Adding service '%s' of type '%s' ..." % (name, args[1])
  65
  66     group = dbus.Interface(bus.get_object("org.freedesktop.Avahi", server.EntryGroupNew()), 'org.freedesktop.Avahi.EntryGroup')
  67     group.connect_to_signal('StateChanged', entry_group_state_changed)
  68     group.AddService(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, name, stype, domain, host, dbus.UInt16(port), txt)
  69     group.Commit()
  70
  71 def entry_group_state_changed(state):
  72     global name, server
  73
  74     if state == avahi.ENTRY_GROUP_ESTABLISHED:
  75         print "Service established."
  76     elif state == avahi.ENTRY_GROUP_COLLISION:
  77         name = server.GetAlternativeServiceName(name)
  78         print "WARNING: Service name collision, changing name to '%s' ..." % name
  79         remove_service()
  80         add_service()
  81
  82 def server_state_changed(state):
  83     if state == avahi.SERVER_COLLISION:
  84         print "WARNING: Server name collision"
  85         remove_service()
  86     elif state == avahi.SERVER_RUNNING:
  87         add_service()
  88
  89 bus = dbus.SystemBus()
  90 server = dbus.Interface(bus.get_object("org.freedesktop.Avahi", '/org/freedesktop/Avahi/Server'), 'org.freedesktop.Avahi.Server')
  91 server.connect_to_signal("StateChanged", server_state_changed)
  92 server_state_changed(server.GetState())
  93
  94 try:
  95     gobject.MainLoop().run()
  96 except KeyboardInterrupt, k:
  97     pass
  98
  99 remove_service()