#!@PYTHON@
# -*-python-*-
# $Id$ 

# This file is part of avahi.
#
# avahi is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# avahi is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with avahi; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA.

import sys, getopt

try:
    import avahi, gobject, dbus, avahi.ServiceTypeDatabase
except ImportError:
    print "Sorry, to use this tool you need to install Avahi, pygtk and python-dbus."
    sys.exit(1)

try:
    import dbus.glib
except ImportError, e:
    pass

def usage(retval = 0):
    print "%s [options] <type>\n" % sys.argv[0]
    print "   -h --help      Show this help"
    print "   -d --domain    The domain to browse"
    print "   -a --all       Show all services, regardless of the type"
    sys.exit(retval)

try:
    opts, args = getopt.getopt(sys.argv[1:], "hd:a", ["help", "domain=", "all"])
except getopt.GetoptError:
    usage(2)

domain = None
stype = None
show_all = False
    
for o, a in opts:
    if o in ("-h", "--help"):
        usage()

    if o in ("-d", "--domain"):
        domain = a

    if o in ("-a", "--all"):
        show_all = True

if len(args) > 1:
    usage(2)

if len(args) >= 1:
    stype = args[0];

if stype is None and not show_all:
    usage(2)

service_type_browsers = {}
service_browsers = {}

service_type_db = avahi.ServiceTypeDatabase.ServiceTypeDatabase()

def siocgifname(interface):
    global server
    
    if interface <= 0:
        return "any"
    else:
        return server.GetNetworkInterfaceNameByIndex(interface)

def lookup_service_type(stype):
    global service_type_db

    try:
        return service_type_db[stype]
    except KeyError:
        return "n/a"

def service_resolved(interface, protocol, name, stype, domain, host, aprotocol, address, port, txt):
    print "Service data for service '%s' of type '%s' (%s) in domain '%s' on %s.%i:" % (name, stype, lookup_service_type(stype), domain, siocgifname(interface), protocol)
    print "\tHost %s (%s), port %i, TXT data: %s" % (host, address, port, avahi.txt_array_to_string_array(txt))

def print_error(err):
    print "Error:", str(err)

def new_service(interface, protocol, name, stype, domain):
    global server
    
    print "Found service '%s' of type '%s' (%s) in domain '%s' on %s.%i." % (name, stype, lookup_service_type(stype), domain, siocgifname(interface), protocol)

    # Asynchronous resolving
    server.ResolveService(interface, protocol, name, stype, domain, avahi.PROTO_UNSPEC, reply_handler=service_resolved, error_handler=print_error)

def remove_service(interface, protocol, name, stype, domain):
    print "Service '%s' of type '%s' (%s) in domain '%s' on %s.%i disappeared." % (name, stype, lookup_service_type(stype), domain, siocgifname(interface), protocol)
 
def new_service_type(interface, protocol, stype, domain):
    global server, service_browsers

    # Are we already browsing this domain for this type? 
    if service_browsers.has_key((interface, protocol, stype, domain)):
        return

    print "Browsing for services of type '%s' (%s) in domain '%s' on %s.%i ..." % (stype, lookup_service_type(stype), domain, siocgifname(interface), protocol)
    
    b = dbus.Interface(bus.get_object(avahi.DBUS_NAME, server.ServiceBrowserNew(interface, protocol, stype, domain)), avahi.DBUS_INTERFACE_SERVICE_BROWSER)
    b.connect_to_signal('ItemNew', new_service)
    b.connect_to_signal('ItemRemove', remove_service)

    service_browsers[(interface, protocol, stype, domain)] = b

def browse_domain(interface, protocol, domain):
    global server, service_type_browsers, stype

    # Are we already browsing this domain?
    if service_type_browsers.has_key((interface, protocol, domain)):
        return

    if stype is None:
        print "Browsing domain '%s' on %s.%i ..." % (domain, siocgifname(interface), protocol)

        b = dbus.Interface(bus.get_object(avahi.DBUS_NAME, server.ServiceTypeBrowserNew(interface, protocol, domain)), avahi.DBUS_INTERFACE_SERVICE_TYPE_BROWSER)
        b.connect_to_signal('ItemNew', new_service_type)

        service_type_browsers[(interface, protocol, domain)] = b
    else:
        new_service_type(interface, protocol, stype, domain)

def new_domain(interface, protocol, domain):

    # We browse for .local anyway...
    if domain != "local":
        browse_domain(interface, protocol, domain)


bus = dbus.SystemBus()
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER), avahi.DBUS_INTERFACE_SERVER)

if domain is None:
    # Explicitly browse .local
    browse_domain(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, "local")

    # Browse for other browsable domains
    db = dbus.Interface(bus.get_object(avahi.DBUS_NAME, server.DomainBrowserNew(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, "", avahi.DOMAIN_BROWSER_BROWSE)), avahi.DBUS_INTERFACE_DOMAIN_BROWSER)
    db.connect_to_signal('ItemNew', new_domain)

else:
    # Just browse the domain the user wants us to browse
    browse_domain(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, domain)

try:
    gobject.MainLoop().run()
except KeyboardInterrupt, k:
    pass