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#!/usr/bin/python3
# Copyright (c) 2017-2019 David Steele <dsteele@gmail.com>
#
# SPDX-License-Identifier: GPL-2.0-or-later
# License-Filename: LICENSE
#
# Copyright 2016-2017 David Steele <steele@debian.org>
# This file is part of comitup
# Available under the terms of the GNU General Public License version 2
# or later
#
import dbus
import dbus.service
import logging
from comitup import iwscan
import os
import re
import subprocess
import sys
sys.path.append("/usr/share/comitup")
import pkg_resources # noqa
from gi.repository.GLib import MainLoop # noqa
import time # noqa
from dbus.mainloop.glib import DBusGMainLoop # noqa
DBusGMainLoop(set_as_default=True)
from comitup import states # noqa
from comitup import nm # noqa
from comitup import modemgr # noqa
comitup_path = "/com/github/davesteele/comitup"
comitup_int = "com.github.davesteele.comitup"
log = logging.getLogger('comitup')
com_obj = None
conf = None
data = None
apcache = None
cachetime = 0
class Comitup(dbus.service.Object):
def __init__(self):
bus_name = dbus.service.BusName(comitup_int, bus=dbus.SystemBus())
dbus.service.Object.__init__(self, bus_name, comitup_path)
@dbus.service.method(comitup_int, in_signature="", out_signature="aa{ss}")
def access_points(self):
global apcache, cachetime
if time.time() - cachetime > 5:
cachetime = time.time() # keep anyone else from processing
aps = iwscan.candidates()
aps = [x for x in aps if x['ssid'] != states.hotspot_name]
apcache = aps
# set a timeout, if we got something
if len(apcache):
cachetime = time.time() # cache time actually starts now
else:
cachetime = 0
return apcache
@dbus.service.method(comitup_int, in_signature="", out_signature="ss")
def state(self):
return [states.com_state, states.connection]
@dbus.service.method(comitup_int, in_signature="ss", out_signature="")
def connect(self, ssid, password):
if nm.get_connection_by_ssid(ssid):
nm.del_connection_by_ssid(ssid)
nm.make_connection_for(ssid, password)
states.set_state('CONNECTING', [ssid, ssid])
@dbus.service.method(comitup_int, in_signature="", out_signature="")
def delete_connection(self):
ssid = nm.get_active_ssid(modemgr.get_link_device())
nm.del_connection_by_ssid(ssid)
states.set_state('HOTSPOT')
@dbus.service.method(comitup_int, in_signature="", out_signature="a{ss}")
def get_info(self):
info = {
'version': pkg_resources.get_distribution("comitup").version,
'apname': expand_ap(conf.ap_name, data.id),
'hostnames': ';'.join(get_hosts(conf, data)),
'imode': modemgr.get_mode(),
}
return info
def expand_ap(ap_name, id):
returnval = ap_name
for l in range(5):
returnval = re.sub("<{}>".format("n"*l), id[:l], returnval)
return returnval
def get_hosts(conf, data):
return [
"{}.local".format(expand_ap(conf.ap_name, data.id)),
]
def external_callback(state, action):
if action != 'start':
return
script = conf.external_callback
if not os.path.isfile(script):
return
if not os.access(script, os.X_OK):
log.error("Callback script %s is not executable" % script)
return
def demote(uid, gid):
def dodemote():
os.setgroups([])
os.setgid(gid)
os.setuid(uid)
return dodemote
stats= os.stat(script)
with open(os.devnull, 'w') as nul:
subprocess.call(
[script, state],
stdout=nul,
stderr=subprocess.STDOUT,
preexec_fn=demote(stats.st_uid, stats.st_gid),
)
def init_state_mgr(gconf, gdata, callbacks):
global com_obj, conf, data
conf, data = (gconf, gdata)
states.init_states(get_hosts(conf, data), callbacks + [external_callback])
com_obj = Comitup()
states.set_state('HOTSPOT', timeout=5)
def main():
handler = logging.StreamHandler(stream=None)
log.addHandler(handler)
log.setLevel(logging.DEBUG)
log.info('starting')
init_state_mgr('comitup.local', 'comitup-1111.local')
states.set_state('HOTSPOT', timeout=5)
loop = MainLoop()
loop.run()
if __name__ == '__main__':
main()
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