manager/qubesmanager/clipboard.py
Marta Marczykowska-Górecka e79724f9db
Update Qt version used in qubesmanager to Qt5
Fixed dependencies, places where obsolete functions stopped working,
code fragments that started throwing warnings and an .ui file that
stopped being readable after the update.
2019-05-30 21:33:49 +02:00

88 lines
3.1 KiB
Python

#!/usr/bin/python3
#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2016 Jean-Philippe Ouellet <jpo@vt.edu>
# 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 Lesser General Public License along
# with this program; if not, see <http://www.gnu.org/licenses/>.
#
#
import os
import fcntl
from math import log
# pylint: disable=import-error
from PyQt5.QtWidgets import QApplication, QMessageBox
APPVIEWER_LOCK = "/var/run/qubes/appviewer.lock"
CLIPBOARD_CONTENTS = "/var/run/qubes/qubes-clipboard.bin"
CLIPBOARD_SOURCE = CLIPBOARD_CONTENTS + ".source"
def do_dom0_copy():
copy_text_to_qubes_clipboard(QApplication.clipboard().text())
def copy_text_to_qubes_clipboard(text):
# inter-appviewer lock
try:
file = os.open(APPVIEWER_LOCK, os.O_RDWR | os.O_CREAT, 0o0666)
except Exception: # pylint: disable=broad-except
QMessageBox.warning(None, "Warning!",
"Error while accessing Qubes clipboard!")
else:
try:
fcntl.flock(file, fcntl.LOCK_EX)
except Exception: # pylint: disable=broad-except
QMessageBox.warning(None, "Warning!",
"Error while locking Qubes clipboard!")
else:
try:
with open(CLIPBOARD_CONTENTS, "w") as contents:
contents.write(text)
with open(CLIPBOARD_SOURCE, "w") as source:
source.write("dom0")
except Exception: # pylint: disable=broad-except
QMessageBox.warning(None, "Warning!",
"Error while writing to Qubes clipboard!")
fcntl.flock(file, fcntl.LOCK_UN)
os.close(file)
# pylint: disable=invalid-name
def get_qubes_clipboard_formatted_size():
units = ['B', 'KiB', 'MiB', 'GiB']
try:
file_size = os.path.getsize(CLIPBOARD_CONTENTS)
except Exception: # pylint: disable=broad-except
QMessageBox.warning(None, "Warning!",
"Error while accessing Qubes clipboard!")
else:
formatted_bytes = '1 byte' if file_size == 1 \
else str(file_size) + ' bytes'
if file_size > 0:
magnitude = min(int(log(file_size)/log(2)*0.1), len(units)-1)
if magnitude > 0:
return '%s (%.1f %s)' % (formatted_bytes,
file_size/(2.0**(10*magnitude)),
units[magnitude])
return '%s' % formatted_bytes
return '? bytes'