manager/qubesmanager/settings.py
2012-04-24 14:27:28 +02:00

793 lines
29 KiB
Python

#!/usr/bin/python2.6
#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2012 Agnieszka Kostrzewa <agnieszka.kostrzewa@gmail.com>
# Copyright (C) 2012 Marek Marczykowski <marmarek@mimuw.edu.pl>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program 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 General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
#
import sys
import os
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qubes.qubes import QubesVmCollection
from qubes.qubes import QubesVmLabels
from qubes.qubes import QubesException
from qubes.qubes import qubes_appmenu_create_cmd
from qubes.qubes import qubes_appmenu_remove_cmd
from qubes.qubes import QubesDaemonPidfile
from qubes.qubes import QubesHost
from qubes.qubes import qrexec_client_path
from qubes.qubes import qubes_kernels_base_dir
import qubesmanager.resources_rc
from pyinotify import WatchManager, Notifier, ThreadedNotifier, EventsCodes, ProcessEvent
import subprocess
import time
import threading
from operator import itemgetter
from copy import copy
from ui_settingsdlg import *
from multiselectwidget import *
from appmenu_select import *
from firewall import *
class VMSettingsWindow(Ui_SettingsDialog, QDialog):
tabs_indices = {"basic": 0,
"advanced": 1,
"firewall": 2,
"devices": 3,
"applications": 4,
"services": 5,}
def __init__(self, vm, app, qvm_collection, init_page="basic", parent=None):
super(VMSettingsWindow, self).__init__(parent)
self.app = app
self.qvm_collection = qvm_collection
self.vm = vm
if self.vm.template:
self.source_vm = self.vm.template
else:
self.source_vm = self.vm
self.setupUi(self)
if init_page in self.tabs_indices:
idx = self.tabs_indices[init_page]
assert (idx in range(self.tabWidget.count()))
self.tabWidget.setCurrentIndex(idx)
self.connect(self.buttonBox, SIGNAL("accepted()"), self.save_and_apply)
self.connect(self.buttonBox, SIGNAL("rejected()"), self.reject)
self.tabWidget.currentChanged.connect(self.current_tab_changed)
self.tabWidget.setTabEnabled(self.tabs_indices["applications"], not vm.is_netvm())
self.tabWidget.setTabEnabled(self.tabs_indices["firewall"], vm.is_networked() and not (vm.is_netvm() and not vm.is_proxyvm()))
###### basic tab
self.__init_basic_tab__()
###### advanced tab
self.__init_advanced_tab__()
self.include_in_balancing.stateChanged.connect(self.include_in_balancing_state_changed)
###### firewall tab
if self.tabWidget.isTabEnabled(self.tabs_indices["firewall"]):
model = QubesFirewallRulesModel()
model.set_vm(vm)
self.set_fw_model(model)
self.newRuleButton.clicked.connect(self.new_rule_button_pressed)
self.editRuleButton.clicked.connect(self.edit_rule_button_pressed)
self.deleteRuleButton.clicked.connect(self.delete_rule_button_pressed)
####### devices tab
self.__init_devices_tab__()
self.connect(self.dev_list, SIGNAL("selected_changed()"), self.devices_selection_changed)
####### services tab
self.__init_services_tab__()
self.add_srv_button.clicked.connect(self.__add_service__)
self.remove_srv_button.clicked.connect(self.__remove_service__)
####### apps tab
if self.tabWidget.isTabEnabled(self.tabs_indices["applications"]):
self.app_list = MultiSelectWidget(self)
self.apps_layout.addWidget(self.app_list)
self.AppListManager = AppmenuSelectManager(self.vm, self.app_list)
def reject(self):
self.done(0)
#needed not to close the dialog before applying changes
def accept(self):
pass
def save_and_apply(self):
thread_monitor = ThreadMonitor()
thread = threading.Thread (target=self.__save_changes__, args=(thread_monitor,))
thread.daemon = True
thread.start()
progress = QProgressDialog ("Applying settings to <b>{0}</b>...".format(self.vm.name), "", 0, 0)
progress.setCancelButton(None)
progress.setModal(True)
progress.show()
while not thread_monitor.is_finished():
self.app.processEvents()
time.sleep (0.1)
progress.hide()
if not thread_monitor.success:
QMessageBox.warning (None, "Error while changing settings for {0}!", "ERROR: {1}".format(self.vm.name, thread_monitor.error_msg))
self.done(0)
def __save_changes__(self, thread_monitor):
self.qvm_collection.lock_db_for_writing()
self.anything_changed = False
ret = self.__apply_basic_tab__()
self.__apply_advanced_tab__()
self.__apply_devices_tab__()
self.__apply_services_tab__()
if len(ret) > 0 :
thread_monitor.set_error_msg('\n'.join(ret))
if self.anything_changed == True:
self.qvm_collection.save()
self.qvm_collection.unlock_db()
if self.tabWidget.isTabEnabled(self.tabs_indices["firewall"]):
self.fw_model.apply_rules(self.policyAllowRadioButton.isChecked(), self.dnsCheckBox.isChecked(), self.icmpCheckBox.isChecked())
if self.tabWidget.isTabEnabled(self.tabs_indices["applications"]):
self.AppListManager.save_appmenu_select_changes()
thread_monitor.set_finished()
def current_tab_changed(self, idx):
if idx == self.tabs_indices["firewall"]:
if self.vm.netvm is not None and not self.vm.netvm.is_proxyvm():
QMessageBox.warning (None, "VM configuration problem!", "The '{0}' AppVM is not network connected to a FirewallVM!<p>".format(self.vm.name) +\
"You may edit the '{0}' VM firewall rules, but these will not take any effect until you connect it to a working Firewall VM.".format(self.vm.name))
######### basic tab
def __init_basic_tab__(self):
self.vmname.setText(self.vm.name)
#self.qvm_collection.lock_db_for_reading()
#self.qvm_collection.load()
#self.qvm_collection.unlock_db()
self.label_list = QubesVmLabels.values()
self.label_list.sort(key=lambda l: l.index)
self.label_idx = 0
for (i, label) in enumerate(self.label_list):
if label == self.vm.label:
self.label_idx = i
self.vmlabel.insertItem(i, label.name)
self.vmlabel.setItemIcon (i, QIcon(label.icon_path))
self.vmlabel.setCurrentIndex(self.label_idx)
if not self.vm.is_template() and self.vm.template is not None:
template_vm_list = [vm for vm in self.qvm_collection.values() if not vm.internal and vm.is_template()]
self.template_idx = -1
for (i, vm) in enumerate(template_vm_list):
text = vm.name
if vm is self.qvm_collection.get_default_template():
text += " (default)"
if vm.qid == self.vm.template.qid:
self.template_idx = i
text += " (current)"
self.template_name.insertItem(i, text)
self.template_name.setCurrentIndex(self.template_idx)
else:
self.template_name.setEnabled(False)
self.template_idx = -1
if (not self.vm.is_netvm() or self.vm.is_proxyvm()):
netvm_list = [vm for vm in self.qvm_collection.values() if not vm.internal and vm.is_netvm()]
self.netvm_idx = -1
text = "default ("+self.qvm_collection.get_default_netvm().name+")"
if self.vm.uses_default_netvm:
text += " (current)"
self.netvm_idx = 0
self.netVM.insertItem(0, text)
for (i, vm) in enumerate(netvm_list):
text = vm.name
if self.vm.netvm is not None and vm.qid == self.vm.netvm.qid and not self.vm.uses_default_netvm:
self.netvm_idx = i+1
text += " (current)"
self.netVM.insertItem(i+1, text)
none_text = "none"
if self.vm.netvm is None:
none_text += " (current)"
self.netvm_idx = len(netvm_list)+1
self.netVM.insertItem(len(netvm_list)+1, none_text)
self.netVM.setCurrentIndex(self.netvm_idx)
else:
self.netVM.setEnabled(False)
self.netvm_idx = -1
self.include_in_backups.setChecked(self.vm.include_in_backups)
if hasattr(self.vm, 'debug'):
self.run_in_debug_mode.setVisible(True)
self.run_in_debug_mode.setChecked(self.vm.debug)
else:
self.run_in_debug_mode.setVisible(False)
#type
self.type_label.setText(self.vm.type)
#installed by rpm
text = "Yes" if self.vm.installed_by_rpm == True else "No"
self.rpm_label.setText(text)
#networking info
if self.vm.is_networked():
self.networking_groupbox.setEnabled(True);
self.ip_label.setText(self.vm.ip if self.vm.ip is not None else "none")
self.netmask_label.setText(self.vm.netmask if self.vm.netmask is not None else "none")
self.gateway_label.setText(self.vm.gateway if self.vm.gateway is not None else "none")
else:
self.networking_groupbox.setEnabled(False);
#max priv storage
self.priv_img_size = self.vm.get_private_img_sz()/1024/1024
self.max_priv_storage.setMinimum(self.priv_img_size)
self.max_priv_storage.setValue(self.priv_img_size)
def __apply_basic_tab__(self):
msg = []
# vmname changed
vmname = str(self.vmname.text())
if self.vm.name != vmname:
if self.vm.is_running():
msg.append("Can't change name of a running VM.")
elif self.qvm_collection.get_vm_by_name(vmname) is not None:
msg.append("Can't change VM name - a VM named <b>{0}</b> already exists in the system!".format(vmname))
else:
oldname = self.vm.name
try:
self.vm.set_name(vmname)
self.anything_changed = True
except Exception as ex:
msg.append(str(ex))
#vm label changed
if self.vmlabel.currentIndex() != self.label_idx:
label = self.label_list[self.vmlabel.currentIndex()]
self.vm.label = label
self.anything_changed = True
#vm template changed
if self.template_name.currentIndex() != self.template_idx:
new_template_name = self.template_name.currentText()
new_template_name = new_template_name.split(' ')[0]
template_vm = self.qvm_collection.get_vm_by_name(new_template_name)
assert (template_vm is not None and template_vm.qid in self.qvm_collection)
assert template_vm.is_template()
self.vm.template = template_vm
self.anything_changed = True
#vm netvm changed
if self.netVM.currentIndex() != self.netvm_idx:
new_netvm_name = self.netVM.currentText()
new_netvm_name = new_netvm_name.split(' ')[0]
uses_default_netvm = False
if new_netvm_name == "default":
new_netvm_name = self.qvm_collection.get_default_netvm().name
uses_default_netvm = True
if new_netvm_name == "none":
netvm = None
else:
netvm = self.qvm_collection.get_vm_by_name(new_netvm_name)
assert (netvm is None or (netvm is not None and netvm.qid in self.qvm_collection and netvm.is_netvm()))
self.vm.netvm = netvm
self.vm.uses_default_netvm = uses_default_netvm
self.anything_changed = True
#include in backups
if self.vm.include_in_backups != self.include_in_backups.isChecked():
self.vm.include_in_backups = self.include_in_backups.isChecked()
self.anything_changed = True
#run_in_debug_mode
if self.run_in_debug_mode.isVisible():
if self.vm.debug != self.run_in_debug_mode.isChecked():
self.vm.debug = self.run_in_debug_mode.isChecked()
self.anything_changed = True
#max priv storage
priv_size = self.max_priv_storage.value()
if self.priv_img_size != priv_size:
try:
self.vm.resize_private_img(priv_size*1024*1024)
self.anything_changed = True
except Exception as ex:
msg.append(str(ex))
return msg
######### advanced tab
def __init_advanced_tab__(self):
#mem/cpu
self.init_mem.setValue(int(self.vm.memory))
self.init_mem.setMaximum(int(self.vm.maxmem))
self.max_mem_size.setValue(int(self.vm.maxmem))
self.max_mem_size.setMaximum(QubesHost().memory_total/1024)
self.vcpus.setMinimum(1);
self.vcpus.setMaximum(QubesHost().no_cpus)
self.vcpus.setValue(int(self.vm.vcpus))
self.include_in_balancing.setChecked(self.vm.services['meminfo-writer']==True)
#paths
self.dir_path.setText(self.vm.dir_path)
self.config_path.setText(self.vm.conf_file)
if self.vm.template is not None:
self.root_img_path.setText(self.vm.template.root_img)
else:
self.root_img_path.setText("n/a")
self.volatile_img_path.setText(self.vm.volatile_img)
self.private_img_path.setText(self.vm.private_img)
#kernel
#in case VM is not Linux
if not hasattr(self.vm, "kernel"):
self.kernel_groupbox.setVisible(False)
return;
if self.vm.template is not None:
text = self.vm.kernel
self.kernel.insertItem(0, text)
self.kernel.setEnabled(False)
self.kernel_idx = 0
else:
text = "default (" + self.qvm_collection.get_default_kernel() +")"
kernel_list = [text]
for k in os.listdir(qubes_kernels_base_dir):
kernel_list.append(k)
kernel_list.append("none")
self.kernel_idx = 0
for (i, k) in enumerate(kernel_list):
text = k
if (text.startswith("default") and self.vm.uses_default_kernel) or ( self.vm.kernel == k and not self.vm.uses_default_kernel) or (k=="none" and self.vm.kernel==None):
text += " (current)"
self.kernel_idx = i
self.kernel.insertItem(i,text)
self.kernel.setCurrentIndex(self.kernel_idx)
#kernel opts
if self.vm.uses_default_kernelopts:
self.kernel_opts.setText(self.vm.kernelopts + " (default)")
else:
self.kernel_opts.setText(self.vm.kernelopts)
def __apply_advanced_tab__(self):
#mem/cpu
if self.init_mem.value() != int(self.vm.memory):
self.vm.memory = self.init_mem.value()
self.anything_changed = True
if self.max_mem_size.value() != int(self.vm.maxmem):
self.vm.maxmem = self.max_mem_size.value()
self.anything_changed = True
if self.vcpus.value() != int(self.vm.vcpus):
self.vm.vcpus = self.vcpus.value()
self.anything_changed = True
#include_in_memory_balancing applied in services tab
#in case VM is not Linux
if not hasattr(self.vm, "kernel"):
return;
#kernel changed
if not self.kernel_groupbox.isVisible():
return
if self.kernel.currentIndex() != self.kernel_idx:
new_kernel = self.kernel.currentText()
new_kernel = new_kernel.split(' ')[0]
if(new_kernel == "default"):
kernel = self.qvm_collection.get_default_kernel()
self.vm.uses_default_kernel = True
elif(new_kernel == "none"):
kernel = None
self.vm.uses_default_kernel = False;
else:
kernel = new_kernel
self.vm.uses_default_kernel = False;
self.vm.kernel = kernel
self.anything_changed = True
######## devices tab
def __init_devices_tab__(self):
self.dev_list = MultiSelectWidget(self)
self.devices_layout.addWidget(self.dev_list)
devs = []
lspci = subprocess.Popen(["lspci",], stdout = subprocess.PIPE)
for dev in lspci.stdout:
devs.append( (dev.rstrip(), dev.split(' ')[0]) )
class DevListWidgetItem(QListWidgetItem):
def __init__(self, name, slot, parent = None):
super(DevListWidgetItem, self).__init__(name, parent)
self.slot = slot
for d in devs:
if d[1] in self.vm.pcidevs:
self.dev_list.selected_list.addItem( DevListWidgetItem(d[0], d[1]))
else:
self.dev_list.available_list.addItem( DevListWidgetItem(d[0], d[1]))
if self.dev_list.selected_list.count() > 0 and self.include_in_balancing.isChecked():
self.dmm_warning_adv.show()
self.dmm_warning_dev.show()
else:
self.dmm_warning_adv.hide()
self.dmm_warning_dev.hide()
if self.vm.is_running():
self.dev_list.setEnabled(False)
self.turn_off_vm_to_modify_devs.setVisible(True)
else:
self.dev_list.setEnabled(True)
self.turn_off_vm_to_modify_devs.setVisible(False)
def __apply_devices_tab__(self):
sth_changed = False
added = []
for i in range(self.dev_list.selected_list.count()):
item = self.dev_list.selected_list.item(i)
if item.slot not in self.vm.pcidevs:
added.append(item)
if self.dev_list.selected_list.count() - len(added) < len(self.vm.pcidevs): #sth removed
sth_changed = True;
elif len(added) > 0:
sth_changed = True;
if sth_changed == True:
pcidevs = []
for i in range(self.dev_list.selected_list.count()):
slot = self.dev_list.selected_list.item(i).slot
pcidevs.append(slot)
self.vm.pcidevs = pcidevs
self.anything_changed = True
def include_in_balancing_state_changed(self, state):
for r in range (self.services_list.count()):
item = self.services_list.item(r)
if str(item.text()) == 'meminfo-writer':
item.setCheckState(state)
break;
if self.dev_list.selected_list.count() > 0:
if state == QtCore.Qt.Checked:
self.dmm_warning_adv.show()
self.dmm_warning_dev.show()
else:
self.dmm_warning_adv.hide()
self.dmm_warning_dev.hide()
def devices_selection_changed(self):
if self.include_in_balancing.isChecked():
if self.dev_list.selected_list.count() > 0 :
self.dmm_warning_adv.show()
self.dmm_warning_dev.show()
else:
self.dmm_warning_adv.hide()
self.dmm_warning_dev.hide()
######## services tab
def __init_services_tab__(self):
for srv in self.vm.services:
item = QListWidgetItem(srv)
if self.vm.services[srv] == True:
item.setCheckState(QtCore.Qt.Checked)
else:
item.setCheckState(QtCore.Qt.Unchecked)
self.services_list.addItem(item)
self.connect(self.services_list, SIGNAL("itemClicked(QListWidgetItem *)"), self.services_item_clicked)
self.new_srv_dict = copy(self.vm.services)
def __add_service__(self):
srv = str(self.service_line_edit.text()).strip()
if srv != "":
if srv in self.new_srv_dict:
QMessageBox.information(None, "", "Service already on the list!")
else:
item = QListWidgetItem(srv)
item.setCheckState(QtCore.Qt.Checked)
self.services_list.addItem(item)
self.new_srv_dict[srv] = True
def __remove_service__(self):
item = self.services_list.currentItem()
if str(item.text()) == 'meminfo-writer':
QMessageBox.information(None, "Service can not be removed", "Service meminfo-writer can not be removed from the list.")
else:
row = self.services_list.currentRow()
item = self.services_list.takeItem(row)
del self.new_srv_dict[str(item.text())]
def services_item_clicked(self, item):
if str(item.text()) == 'meminfo-writer':
if item.checkState() == QtCore.Qt.Checked:
if not self.include_in_balancing.isChecked():
self.include_in_balancing.setChecked(True)
elif item.checkState() == QtCore.Qt.Unchecked:
if self.include_in_balancing.isChecked():
self.include_in_balancing.setChecked(False)
def __apply_services_tab__(self):
for r in range (self.services_list.count()):
item = self.services_list.item(r)
self.new_srv_dict[str(item.text())] = (item.checkState() == QtCore.Qt.Checked)
balancing_was_checked = (self.vm.services['meminfo-writer']==True)
balancing_is_checked = self.include_in_balancing.isChecked()
meminfo_writer_checked = (self.new_srv_dict['meminfo-writer'] == True)
if balancing_is_checked != meminfo_writer_checked:
if balancing_is_checked != balancing_was_checked:
self.new_srv_dict['meminfo-writer'] = balancing_is_checked
if self.new_srv_dict != self.vm.services:
self.vm.services = self.new_srv_dict
self.anything_changed = True
######### firewall tab related
def set_fw_model(self, model):
self.fw_model = model
self.rulesTreeView.setModel(model)
self.rulesTreeView.header().setResizeMode(QHeaderView.ResizeToContents)
self.rulesTreeView.header().setResizeMode(0, QHeaderView.Stretch)
self.set_allow(model.allow)
self.dnsCheckBox.setChecked(model.allowDns)
self.icmpCheckBox.setChecked(model.allowIcmp)
def set_allow(self, allow):
self.policyAllowRadioButton.setChecked(allow)
self.policyDenyRadioButton.setChecked(not allow)
def new_rule_button_pressed(self):
dialog = NewFwRuleDlg()
self.run_rule_dialog(dialog)
def edit_rule_button_pressed(self):
dialog = NewFwRuleDlg()
dialog.set_ok_enabled(True)
selected = self.rulesTreeView.selectedIndexes()
if len(selected) > 0:
row = self.rulesTreeView.selectedIndexes().pop().row()
address = self.fw_model.get_column_string(0, row).replace(' ', '')
dialog.addressComboBox.setItemText(0, address)
dialog.addressComboBox.setCurrentIndex(0)
service = self.fw_model.get_column_string(1, row)
if service == "any":
service = ""
dialog.serviceComboBox.setItemText(0, service)
dialog.serviceComboBox.setCurrentIndex(0)
protocol = self.fw_model.get_column_string(2, row)
if protocol == "tcp":
dialog.tcp_radio.setChecked(True)
elif protocol == "udp":
dialog.udp_radio.setChecked(True)
else:
dialog.any_radio.setChecked(True)
self.run_rule_dialog(dialog, row)
def delete_rule_button_pressed(self):
for i in set([index.row() for index in self.rulesTreeView.selectedIndexes()]):
self.fw_model.removeChild(i)
self.fw_model.fw_changed = True
def run_rule_dialog(self, dialog, row = None):
if dialog.exec_():
address = str(dialog.addressComboBox.currentText())
service = str(dialog.serviceComboBox.currentText())
port = None
port2 = None
unmask = address.split("/", 1)
if len(unmask) == 2:
address = unmask[0]
netmask = int(unmask[1])
else:
netmask = 32
if address == "*":
address = "0.0.0.0"
netmask = 0
if dialog.any_radio.isChecked():
protocol = "any"
port = 0
else:
if dialog.tcp_radio.isChecked():
protocol = "tcp"
elif dialog.udp_radio.isChecked():
protocol = "udp"
try:
range = service.split("-", 1)
if len(range) == 2:
port = int(range[0])
port2 = int(range[1])
else:
port = int(service)
except (TypeError, ValueError) as ex:
port = self.fw_model.get_service_port(service)
if port is not None:
if port2 is not None and port2 <= port:
QMessageBox.warning(None, "Invalid service ports range", "Port {0} is lower than port {1}.".format(port2, port))
else:
item = QubesFirewallRuleItem(address, netmask, port, port2, protocol)
if row is not None:
self.fw_model.setChild(row, item)
self.fw_model.fw_changed = True
else:
self.fw_model.appendChild(item)
self.fw_model.fw_changed = True
else:
QMessageBox.warning(None, "Invalid service name", "Service '{0} is unknown.".format(service))
# Bases on the original code by:
# Copyright (c) 2002-2007 Pascal Varet <p.varet@gmail.com>
def handle_exception( exc_type, exc_value, exc_traceback ):
import sys
import os.path
import traceback
filename, line, dummy, dummy = traceback.extract_tb( exc_traceback ).pop()
filename = os.path.basename( filename )
error = "%s: %s" % ( exc_type.__name__, exc_value )
strace = ""
stacktrace = traceback.extract_tb( exc_traceback )
while len(stacktrace) > 0:
(filename, line, func, txt) = stacktrace.pop()
strace += "----\n"
strace += "line: %s\n" %txt
strace += "func: %s\n" %func
strace += "line no.: %d\n" %line
strace += "file: %s\n" %filename
msg_box = QMessageBox()
msg_box.setDetailedText(strace)
msg_box.setIcon(QMessageBox.Critical)
msg_box.setWindowTitle( "Houston, we have a problem...")
msg_box.setText("Whoops. A critical error has occured. This is most likely a bug "
"in Qubes Manager.<br><br>"
"<b><i>%s</i></b>" % error +
"<br/>at line <b>%d</b><br/>of file %s.<br/><br/>"
% ( line, filename ))
msg_box.exec_()
def main():
global qubes_host
qubes_host = QubesHost()
global app
app = QApplication(sys.argv)
app.setOrganizationName("The Qubes Project")
app.setOrganizationDomain("http://qubes-os.org")
app.setApplicationName("Qubes VM Settings")
sys.excepthook = handle_exception
qvm_collection = QubesVmCollection()
qvm_collection.lock_db_for_reading()
qvm_collection.load()
qvm_collection.unlock_db()
vm = None
if len(sys.argv) > 1:
vm = qvm_collection.get_vm_by_name(sys.argv[1])
if vm is None or vm.qid not in qvm_collection:
QMessageBox.critical(None, "Qubes VM Settings Error",
"A VM with the name '{0}' does not exist in the system.".format(sys.argv[1]))
sys.exit(1)
else:
vms_list = [vm.name for vm in qvm_collection.values() if (vm.is_appvm() or vm.is_template())]
vmname = QInputDialog.getItem(None, "Select VM", "Select VM:", vms_list, editable = False)
if not vmname[1]:
sys.exit(1)
vm = qvm_collection.get_vm_by_name(vmname[0])
global settings_window
settings_window = VMSettingsWindow(vm, app, qvm_collection, "basic")
settings_window.show()
app.exec_()
app.exit()
if __name__ == "__main__":
main()