Qubes/core-admin-client
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Make PEP8 happier

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Frédéric Pierret (fepitre) 2019-10-20 13:24:56 +02:00
parent 1d3a214648
commit a5102d752f
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3 changed files with 77 additions and 68 deletions
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1
qubesadmin/qubesadmin
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@ -1 +0,0 @@
/home/user/qubes-builder/qubes-src/core-admin-client/qubesadmin

86
qubesadmin/tools/qvm_start_gui.py
View File

@ -18,7 +18,7 @@
# You should have received a copy of the GNU Lesser General Public License along
# with this program; if not, see <http://www.gnu.org/licenses/>.
''' GUI daemon launcher tool'''
""" GUI daemon launcher tool"""
import os
import signal
@ -35,10 +35,12 @@ import qubesadmin
import qubesadmin.exc
import qubesadmin.tools
import qubesadmin.vm
have_events = False
try:
# pylint: disable=wrong-import-position
import qubesadmin.events
have_events = True
except ImportError:
pass
@ -47,7 +49,7 @@ GUI_DAEMON_PATH = '/usr/bin/qubes-guid'
QUBES_ICON_DIR = '/usr/share/icons/hicolor/128x128/devices'
# "LVDS connected 1024x768+0+0 (normal left inverted right) 304mm x 228mm"
REGEX_OUTPUT = re.compile(r'''
REGEX_OUTPUT = re.compile(r"""
(?x) # ignore whitespace
^ # start of string
(?P<output>[A-Za-z0-9\-]*)[ ] # LVDS VGA etc
@ -67,11 +69,11 @@ REGEX_OUTPUT = re.compile(r'''
)?
.* # ignore rest of line
)? # everything after (dis)connect is optional
''')
""")
def get_monitor_layout():
'''Get list of monitors and their size/position'''
"""Get list of monitors and their size/position"""
outputs = []
for line in subprocess.Popen(
@ -112,18 +114,19 @@ def get_monitor_layout():
class GUILauncher(object):
'''Launch GUI daemon for VMs'''
"""Launch GUI daemon for VMs"""
def __init__(self, app: qubesadmin.app.QubesBase):
''' Initialize GUILauncher.
""" Initialize GUILauncher.
:param app: :py:class:`qubesadmin.Qubes` instance
'''
"""
self.app = app
self.started_processes = {}
@staticmethod
def kde_guid_args(vm):
'''Return KDE-specific arguments for gui-daemon, if applicable'''
"""Return KDE-specific arguments for gui-daemon, if applicable"""
guid_cmd = []
# Avoid using environment variables for checking the current session,
@ -151,11 +154,12 @@ class GUILauncher(object):
guid_cmd += ['-p',
'_KDE_NET_WM_COLOR_SCHEME=s:{}'.format(
os.path.join(data_dir,
'qubes-kde', vm.label.name + '.colors'))]
'qubes-kde',
vm.label.name + '.colors'))]
return guid_cmd
def common_guid_args(self, vm):
'''Common qubes-guid arguments for PV(H), HVM and Stubdomain'''
"""Common qubes-guid arguments for PV(H), HVM and Stubdomain"""
guid_cmd = [GUI_DAEMON_PATH,
'-N', vm.name,
@ -177,19 +181,19 @@ class GUILauncher(object):
@staticmethod
def guid_pidfile(xid):
'''Helper function to construct a pidfile path'''
"""Helper function to construct a pidfile path"""
return '/var/run/qubes/guid-running.{}'.format(xid)
@asyncio.coroutine
def start_gui_for_vm(self, vm, monitor_layout=None):
'''Start GUI daemon (qubes-guid) connected directly to a VM
"""Start GUI daemon (qubes-guid) connected directly to a VM
This function is a coroutine.
:param vm: VM for which start GUI daemon
:param monitor_layout: monitor layout to send; if None, fetch it from
local X server.
'''
"""
guid_cmd = self.common_guid_args(vm)
guid_cmd.extend(['-d', str(vm.xid)])
@ -212,10 +216,10 @@ class GUILauncher(object):
@asyncio.coroutine
def start_gui_for_stubdomain(self, vm, force=False):
'''Start GUI daemon (qubes-guid) connected to a stubdomain
"""Start GUI daemon (qubes-guid) connected to a stubdomain
This function is a coroutine.
'''
"""
want_stubdom = force
if not want_stubdom and \
vm.features.check_with_template('gui-emulated', False):
@ -239,17 +243,17 @@ class GUILauncher(object):
@asyncio.coroutine
def start_gui(self, vm, force_stubdom=False, monitor_layout=None):
'''Start GUI daemon regardless of start event.
"""Start GUI daemon regardless of start event.
This function is a coroutine.
:param vm: VM for which GUI daemon should be started
:param force_stubdom: Force GUI daemon for stubdomain, even if the
one for target AppVM is running.
'''
:param monitor_layout: monitor layout configuration
"""
if vm.virt_mode == 'hvm':
yield from self.start_gui_for_stubdomain(vm,
force=force_stubdom)
yield from self.start_gui_for_stubdomain(vm, force=force_stubdom)
if not vm.features.check_with_template('gui', True):
return
@ -259,7 +263,7 @@ class GUILauncher(object):
@asyncio.coroutine
def send_monitor_layout(self, vm, layout=None, startup=False):
'''Send monitor layout to a given VM
"""Send monitor layout to a given VM
This function is a coroutine.
@ -268,7 +272,7 @@ class GUILauncher(object):
local X server.
:param startup:
:return: None
'''
"""
# pylint: disable=no-self-use
if vm.features.check_with_template('no-monitor-layout', False) \
or not vm.is_running():
@ -293,8 +297,10 @@ class GUILauncher(object):
pass
try:
yield from asyncio.get_event_loop().run_in_executor(None,
functools.partial(vm.run_service_for_stdio,
yield from asyncio.get_event_loop(). \
run_in_executor(None,
functools.partial(
vm.run_service_for_stdio,
'qubes.SetMonitorLayout',
input=''.join(layout).encode(),
autostart=False))
@ -302,7 +308,7 @@ class GUILauncher(object):
vm.log.warning('Failed to send monitor layout: %s', e.stderr)
def send_monitor_layout_all(self):
'''Send monitor layout to all (running) VMs'''
"""Send monitor layout to all (running) VMs"""
monitor_layout = get_monitor_layout()
for vm in self.app.domains:
if vm.klass == 'AdminVM':
@ -314,7 +320,7 @@ class GUILauncher(object):
monitor_layout))
def on_domain_spawn(self, vm, _event, **kwargs):
'''Handler of 'domain-spawn' event, starts GUI daemon for stubdomain'''
"""Handler of 'domain-spawn' event, starts GUI daemon for stubdomain"""
try:
if not vm.features.check_with_template('gui', True):
return
@ -325,7 +331,7 @@ class GUILauncher(object):
vm.log.warning('Failed to start GUI for %s: %s', vm.name, str(e))
def on_domain_start(self, vm, _event, **kwargs):
'''Handler of 'domain-start' event, starts GUI daemon for actual VM'''
"""Handler of 'domain-start' event, starts GUI daemon for actual VM"""
try:
if not vm.features.check_with_template('gui', True):
return
@ -335,8 +341,8 @@ class GUILauncher(object):
vm.log.warning('Failed to start GUI for %s: %s', vm.name, str(e))
def on_connection_established(self, _subject, _event, **_kwargs):
'''Handler of 'connection-established' event, used to launch GUI
daemon for domains started before this tool. '''
"""Handler of 'connection-established' event, used to launch GUI
daemon for domains started before this tool. """
monitor_layout = get_monitor_layout()
self.app.domains.clear_cache()
@ -347,8 +353,8 @@ class GUILauncher(object):
continue
power_state = vm.get_power_state()
if power_state == 'Running':
asyncio.ensure_future(self.start_gui(vm,
monitor_layout=monitor_layout))
asyncio.ensure_future(
self.start_gui(vm, monitor_layout=monitor_layout))
elif power_state == 'Transient':
# it is still starting, we'll get 'domain-start' event when
# fully started
@ -356,21 +362,23 @@ class GUILauncher(object):
asyncio.ensure_future(self.start_gui_for_stubdomain(vm))
def register_events(self, events):
'''Register domain startup events in app.events dispatcher'''
"""Register domain startup events in app.events dispatcher"""
events.add_handler('domain-spawn', self.on_domain_spawn)
events.add_handler('domain-start', self.on_domain_start)
events.add_handler('connection-established',
self.on_connection_established)
def x_reader(conn, callback):
'''Try reading something from X connection to check if it's still alive.
"""Try reading something from X connection to check if it's still alive.
In case it isn't, call *callback*.
'''
"""
try:
conn.poll_for_event()
except xcffib.ConnectionException:
callback()
if 'XDG_RUNTIME_DIR' in os.environ:
pidfile_path = os.path.join(os.environ['XDG_RUNTIME_DIR'],
'qvm-start-gui.pid')
@ -381,18 +389,20 @@ else:
parser = qubesadmin.tools.QubesArgumentParser(
description='start GUI for qube(s)', vmname_nargs='*')
parser.add_argument('--watch', action='store_true',
help='Keep watching for further domains startups, must be used with --all')
help='Keep watching for further domains'
' startups, must be used with --all')
parser.add_argument('--force-stubdomain', action='store_true',
help='Start GUI to stubdomain-emulated VGA, even if gui-agent is running '
'in the VM')
help='Start GUI to stubdomain-emulated VGA,'
' even if gui-agent is running in the VM')
parser.add_argument('--pidfile', action='store', default=pidfile_path,
help='Pidfile path to create in --watch mode')
parser.add_argument('--notify-monitor-layout', action='store_true',
help='Notify running instance in --watch mode about changed monitor layout')
help='Notify running instance in --watch mode'
' about changed monitor layout')
def main(args=None):
''' Main function of qvm-start-gui tool'''
""" Main function of qvm-start-gui tool"""
args = parser.parse_args(args)
if args.watch and not args.all_domains:
parser.error('--watch option must be used with --all')