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#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
    Slixmpp: The Slick XMPP Library
    Copyright (C) 2010  Nathanael C. Fritz
    This file is part of Slixmpp.

    See the file LICENSE for copying permission.
"""

import logging
from getpass import getpass
from optparse import OptionParser

import slixmpp


class IBBReceiver(slixmpp.ClientXMPP):

    """
    A basic example of creating and using an in-band bytestream.
    """

    def __init__(self, jid, password):
        slixmpp.ClientXMPP.__init__(self, jid, password)

        self.register_plugin('xep_0030') # Service Discovery
        self.register_plugin('xep_0047', {
            'auto_accept': True
        }) # In-band Bytestreams

        # The session_start event will be triggered when
        # the bot establishes its connection with the server
        # and the XML streams are ready for use. We want to
        # listen for this event so that we we can initialize
        # our roster.
        self.add_event_handler("session_start", self.start)

        self.add_event_handler("ibb_stream_start", self.stream_opened)
        self.add_event_handler("ibb_stream_data", self.stream_data)

    def start(self, event):
        """
        Process the session_start event.

        Typical actions for the session_start event are
        requesting the roster and broadcasting an initial
        presence stanza.

        Arguments:
            event -- An empty dictionary. The session_start
                     event does not provide any additional
                     data.
        """
        self.send_presence()
        self.get_roster()

    def accept_stream(self, iq):
        """
        Check that it is ok to accept a stream request.

        Controlling stream acceptance can be done via either:
            - setting 'auto_accept' to False in the plugin
              configuration. The default is True.
            - setting 'accept_stream' to a function which accepts
              an Iq stanza as its argument, like this one.

        The accept_stream function will be used if it exists, and the
        auto_accept value will be used otherwise.
        """
        return True

    def stream_opened(self, stream):
        print('Stream opened: %s from %s' % (stream.sid, stream.peer_jid))

        # You could run a loop reading from the stream using stream.recv(),
        # or use the ibb_stream_data event.

    def stream_data(self, event):
        print(event['data'])

if __name__ == '__main__':
    # Setup the command line arguments.
    optp = OptionParser()

    # Output verbosity options.
    optp.add_option('-q', '--quiet', help='set logging to ERROR',
                    action='store_const', dest='loglevel',
                    const=logging.ERROR, default=logging.INFO)
    optp.add_option('-d', '--debug', help='set logging to DEBUG',
                    action='store_const', dest='loglevel',
                    const=logging.DEBUG, default=logging.INFO)
    optp.add_option('-v', '--verbose', help='set logging to COMM',
                    action='store_const', dest='loglevel',
                    const=5, default=logging.INFO)

    # JID and password options.
    optp.add_option("-j", "--jid", dest="jid",
                    help="JID to use")
    optp.add_option("-p", "--password", dest="password",
                    help="password to use")

    opts, args = optp.parse_args()

    # Setup logging.
    logging.basicConfig(level=opts.loglevel,
                        format='%(levelname)-8s %(message)s')

    if opts.jid is None:
        opts.jid = input("Username: ")
    if opts.password is None:
        opts.password = getpass("Password: ")

    xmpp = IBBReceiver(opts.jid, opts.password)

    # Connect to the XMPP server and start processing XMPP stanzas.
    xmpp.connect()
    xmpp.process()