FM / DistUpgrade

/usr/lib/python3/dist-packages/DistUpgrade/

/usr/lib/python3/dist-packages/DistUpgrade

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
apt_btrfs_snapshot.py	9915	0644	edit dl rm
apt_clone.py	33530	0644	edit dl rm
dist-upgrade.py	129	0644	edit dl rm
distro.py	23763	0644	edit dl rm
DistUpgradeApport.py	5058	0644	edit dl rm
DistUpgradeCache.py	54225	0644	edit dl rm
DistUpgradeConfigParser.py	3837	0644	edit dl rm
DistUpgradeController.py	101282	0644	edit dl rm
DistUpgradeFetcher.py	6009	0644	edit dl rm
DistUpgradeFetcherCore.py	12745	0644	edit dl rm
DistUpgradeFetcherKDE.py	9950	0644	edit dl rm
DistUpgradeFetcherSelf.py	1955	0644	edit dl rm
DistUpgradeGettext.py	3043	0644	edit dl rm
DistUpgradeMain.py	9359	0644	edit dl rm
DistUpgradePatcher.py	4018	0644	edit dl rm
DistUpgradeQuirks.py	70360	0644	edit dl rm
DistUpgradeVersion.py	21	0644	edit dl rm
DistUpgradeView.py	17344	0644	edit dl rm
DistUpgradeViewGtk3.py	34670	0644	edit dl rm
DistUpgradeViewKDE.py	41846	0644	edit dl rm
DistUpgradeViewNonInteractive.py	13862	0644	edit dl rm
DistUpgradeViewText.py	12829	0644	edit dl rm
GtkProgress.py	4020	0644	edit dl rm
MetaRelease.py	17543	0644	edit dl rm
QUrlOpener.py	3321	0644	edit dl rm
ReleaseNotesViewer.py	7658	0644	edit dl rm
ReleaseNotesViewerWebkit.py	2983	0644	edit dl rm
SimpleGtk3builderApp.py	2056	0644	edit dl rm
SimpleGtkbuilderApp.py	2037	0644	edit dl rm
telemetry.py	3478	0644	edit dl rm
utils.py	18541	0644	edit dl rm
xorg_fix_proprietary.py	4083	0644	edit dl rm
__init__.py	0	0644	edit dl rm

Edit: /usr/lib/python3/dist-packages/DistUpgrade/QUrlOpener.py (3321B)

# QUrlOpener.py
# -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
#
#  Copyright (c) 2014-2018 Harald Sitter <apachelogger@kubuntu.org>
#
#  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, see <http://www.gnu.org/licenses/>.

try:
    # 14.04 has a broken pyqt5, so don't even try to import it and require
    # pyqt4.
    # In 14.04 various signals in pyqt5 can not be connected because it thinks
    # the signal does not exist or has an incompatible signature. Since this
    # potentially renders the GUI entirely broken and pyqt5 was not actively
    # used back then it is fair to simply require qt4 on trusty systems.
    from .utils import get_dist
    if get_dist() == 'trusty':
        raise ImportError

from PyQt5.QtCore import QObject, QCoreApplication, pyqtSlot, QUrl
    from PyQt5.QtGui import QDesktopServices
except ImportError:
    from PyQt4.QtCore import QObject, QCoreApplication, pyqtSlot, QUrl
    from PyQt4.QtGui import QDesktopServices

import os
import subprocess

def singleton(class_):
    instances = {}

def instance(*args, **kwargs):
        if class_ not in instances:
            instances[class_] = class_(*args, **kwargs)
        return instances[class_]
    return instance

@singleton
class QUrlOpener(QObject):
    def __init__(self):
        QObject.__init__(self)
        self.setParent(QCoreApplication.instance())

def setupUrlHandles(self):
        # Make sure we don't run a root browser.
        # NOTE: Qt native API can set an openUrl handler from a QObject
        # function, pyqt in theory also allows an arbitrary callable. Latter
        # has been observed to be non-functional so rely on the native handling
        QDesktopServices.setUrlHandler('http', self, 'openUrl')
        QDesktopServices.setUrlHandler('https', self, 'openUrl')

# NOTE: largely code copy from ReleaseNotesViewer which imports GTK.
    @pyqtSlot(QUrl)
    def openUrl(self, url):
        url = url.toString()
        """Open the specified URL in a browser"""
        # Find an appropiate browser
        if os.path.exists("/usr/bin/xdg-open"):
            command = ["xdg-open", url]
        elif os.path.exists("/usr/bin/kde-open"):
            command = ["kde-open", url]
        elif os.path.exists("/usr/bin/exo-open"):
            command = ["exo-open", url]
        elif os.path.exists('/usr/bin/gnome-open'):
            command = ['gnome-open', url]
        else:
            command = ['x-www-browser', url]
        # Avoid to run the browser as user root
        if os.getuid() == 0 and 'SUDO_USER' in os.environ:
            command = ['sudo',
                       '--set-home',
                       '-u', os.environ['SUDO_USER']] + command
        subprocess.Popen(command)

cmd: