Add support for PyQt5

launcher/README.md

@@ -0,0 +1,22 @@
+The preflight updater GUI currently supports both PyQt4 and PyQt5. To
+enforce the use of PyQt5, set the environment variable SDW_UPDATER_QT to 5.
+
+## Why support PyQt4 and PyQt5?
+
+Qubes 4.0.3 uses an end-of-life Fedora template in dom0 (fedora-25). See
+rationale here:
+
+https://www.qubes-os.org/doc/supported-versions/#note-on-dom0-and-eol
+
+fedora-25 only includes PyQt4, which is why we have to support it for now.
+PyQt4 itself is no longer maintained, and is best installed through system
+packages, e.g., https://packages.debian.org/buster/python3-pyqt4
+
+The next version of Qubes, Qubes 4.1, will include PyQt5 in dom0.
+
+## Installing PyQt5
+
+Activate a virtualenv and intall the requirements using the following
+command:
+
+pip install --require-hashes -r qt5-requirements.txt

launcher/qt5-requirements.in

@@ -0,0 +1 @@
+PyQt5==5.11.3

launcher/qt5-requirements.txt

@@ -0,0 +1,30 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --allow-unsafe --generate-hashes --output-file=qt5-requirements.txt qt5-requirements.in
+#
+pyqt5-sip==4.19.19 \
+    --hash=sha256:304acf771b6033cb4bafc415939d227c91265d30664ed643b298d7e95f509f81 \
+    --hash=sha256:39d2677f4de46ed4d7aa3b612f31c74c881975efe51c6a23fbb1d9382e4cc850 \
+    --hash=sha256:54b99a3057e8f01b90d49cca9ca566b1ea23d8920038760f44e75b90c62b9d5f \
+    --hash=sha256:59f5332f86f3ccd3ac94674fe91eae6e8aca26da7c6588917cabd0fe22af106d \
+    --hash=sha256:72be07a21b0f379987c4ec59bc86834a9719a2f9cfb49606a4d4e34dae9aa549 \
+    --hash=sha256:7b3b8c015e545fa30e42205fc1115b7c6afcb6acec790ce3f330a06323730523 \
+    --hash=sha256:7fbb6389c20aff4c3257e89bb1787effffcaf05c32d937c00094ae45846bffd5 \
+    --hash=sha256:828d9911acc483672a2bae1cc1bf79f591eb3338faad1f2c798aa2f45459a318 \
+    --hash=sha256:a9460dac973deccc6ff2d90f18fd105cbaada147f84e5917ed79374dcb237758 \
+    --hash=sha256:aade50f9a1b9d20f6aabe88e8999b10db57218f5c31950160f3f7957dd64e07c \
+    --hash=sha256:ac9e5b282d1f0771a8310ed974afe1961ec31e9ae787d052c0e504ea46ae323a \
+    --hash=sha256:ba41bd21b89c6713f7077b5f7d4a1c452989190aad5704e215560a266a1ecbab \
+    --hash=sha256:c309dbbd6c155e961bfd6893496afa5cd184cce6f7dffd87ea68ee048b6f97e1 \
+    --hash=sha256:cfc21b1f80d4655ffa776c505a2576b4d148bbc52bb3e33fedbf6cfbdbc09d1b \
+    --hash=sha256:d7b26e0b6d81bf14c1239e6a891ac1303a7e882512d990ec330369c7269226d7 \
+    --hash=sha256:f8b7a3e05235ce58a38bf317f71a5cb4ab45d3b34dc57421dd8cea48e0e4023e \
+    # via pyqt5
+pyqt5==5.11.3 \
+    --hash=sha256:517e4339135c4874b799af0d484bc2e8c27b54850113a68eec40a0b56534f450 \
+    --hash=sha256:ac1eb5a114b6e7788e8be378be41c5e54b17d5158994504e85e43b5fca006a39 \
+    --hash=sha256:d2309296a5a79d0a1c0e6c387c30f0398b65523a6dcc8a19cc172e46b949e00d \
+    --hash=sha256:e85936bae1581bcb908847d2038e5b34237a5e6acc03130099a78930770e7ead \
+    # via -r qt5-requirements.in

launcher/sdw-launcher.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-from PyQt4 import QtGui
 from sdw_updater_gui.UpdaterApp import UpdaterApp
 from sdw_util import Util
 from sdw_updater_gui import Updater
@@ -9,6 +8,13 @@
 import sys
 import argparse
 
+if Util.get_qt_version() == 5:
+    print("Using Qt5 (experimental)")
+    from PyQt5.QtWidgets import QApplication
+else:
+    from PyQt4.QtGui import QApplication
+
+
 DEFAULT_INTERVAL = 28800  # 8hr default for update interval
 
 
@@ -23,7 +29,7 @@ def launch_updater():
     Start the updater GUI
     """
 
-    app = QtGui.QApplication(sys.argv)
+    app = QApplication(sys.argv)
     form = UpdaterApp()
     form.show()
     sys.exit(app.exec_())

launcher/sdw_updater_gui/UpdaterApp.py

@@ -1,13 +1,21 @@
-from PyQt4 import QtGui
-from PyQt4.QtCore import QThread, pyqtSignal, pyqtSlot
-from sdw_updater_gui.UpdaterAppUi import Ui_UpdaterDialog
 from sdw_updater_gui import strings
 from sdw_updater_gui import Updater
 from sdw_updater_gui.Updater import UpdateStatus
+from sdw_util import Util
 import logging
 import subprocess
 import sys
 
+if Util.get_qt_version() == 5:
+    from PyQt5.QtWidgets import QDialog
+    from PyQt5.QtCore import QThread, pyqtSignal, pyqtSlot
+    from sdw_updater_gui.UpdaterAppUiQt5 import Ui_UpdaterDialog
+else:
+    from PyQt4.QtGui import QDialog
+    from PyQt4.QtCore import QThread, pyqtSignal, pyqtSlot
+    from sdw_updater_gui.UpdaterAppUi import Ui_UpdaterDialog
+
+
 logger = logging.getLogger(__name__)
 
 
@@ -24,7 +32,7 @@ def launch_securedrop_client():
     sys.exit(0)
 
 
-class UpdaterApp(QtGui.QDialog, Ui_UpdaterDialog):
+class UpdaterApp(QDialog, Ui_UpdaterDialog):
     def __init__(self, parent=None):
         super(UpdaterApp, self).__init__(parent)
 

launcher/sdw_updater_gui/UpdaterAppUiQt5.py

@@ -0,0 +1,114 @@
+# -*- coding: utf-8 -*-
+
+# Form implementation generated from reading ui file 'sdw_updater.ui'
+#
+# Created by: PyQt5 UI code generator 5.10.1
+#
+# WARNING! All changes made in this file will be lost!
+
+from PyQt5 import QtCore, QtGui, QtWidgets
+
+
+class Ui_UpdaterDialog(object):
+    def setupUi(self, UpdaterDialog):
+        UpdaterDialog.setObjectName("UpdaterDialog")
+        UpdaterDialog.resize(520, 300)
+        sizePolicy = QtWidgets.QSizePolicy(
+            QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred
+        )
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(UpdaterDialog.sizePolicy().hasHeightForWidth())
+        UpdaterDialog.setSizePolicy(sizePolicy)
+        UpdaterDialog.setMaximumSize(QtCore.QSize(600, 420))
+        self.gridLayout_2 = QtWidgets.QGridLayout(UpdaterDialog)
+        self.gridLayout_2.setObjectName("gridLayout_2")
+        self.gridLayout = QtWidgets.QGridLayout()
+        self.gridLayout.setContentsMargins(-1, 15, -1, 15)
+        self.gridLayout.setHorizontalSpacing(3)
+        self.gridLayout.setObjectName("gridLayout")
+        spacerItem = QtWidgets.QSpacerItem(
+            20, 10, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed
+        )
+        self.gridLayout.addItem(spacerItem, 1, 1, 1, 5)
+        self.clientOpenButton = QtWidgets.QPushButton(UpdaterDialog)
+        self.clientOpenButton.setStyleSheet("")
+        self.clientOpenButton.setAutoDefault(True)
+        self.clientOpenButton.setObjectName("clientOpenButton")
+        self.gridLayout.addWidget(self.clientOpenButton, 7, 4, 1, 1)
+        self.proposedActionDescription = QtWidgets.QLabel(UpdaterDialog)
+        sizePolicy = QtWidgets.QSizePolicy(
+            QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Minimum
+        )
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(
+            self.proposedActionDescription.sizePolicy().hasHeightForWidth()
+        )
+        self.proposedActionDescription.setSizePolicy(sizePolicy)
+        self.proposedActionDescription.setAlignment(
+            QtCore.Qt.AlignLeading | QtCore.Qt.AlignLeft | QtCore.Qt.AlignTop
+        )
+        self.proposedActionDescription.setWordWrap(True)
+        self.proposedActionDescription.setObjectName("proposedActionDescription")
+        self.gridLayout.addWidget(self.proposedActionDescription, 4, 1, 1, 5)
+        spacerItem1 = QtWidgets.QSpacerItem(
+            40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum
+        )
+        self.gridLayout.addItem(spacerItem1, 7, 1, 1, 1)
+        self.rebootButton = QtWidgets.QPushButton(UpdaterDialog)
+        self.rebootButton.setStyleSheet("")
+        self.rebootButton.setAutoDefault(True)
+        self.rebootButton.setObjectName("rebootButton")
+        self.gridLayout.addWidget(self.rebootButton, 7, 3, 1, 1)
+        self.applyUpdatesButton = QtWidgets.QPushButton(UpdaterDialog)
+        self.applyUpdatesButton.setStyleSheet("")
+        self.applyUpdatesButton.setAutoDefault(True)
+        self.applyUpdatesButton.setDefault(False)
+        self.applyUpdatesButton.setObjectName("applyUpdatesButton")
+        self.gridLayout.addWidget(self.applyUpdatesButton, 7, 2, 1, 1)
+        self.cancelButton = QtWidgets.QPushButton(UpdaterDialog)
+        self.cancelButton.setStyleSheet("")
+        self.cancelButton.setAutoDefault(True)
+        self.cancelButton.setObjectName("cancelButton")
+        self.gridLayout.addWidget(self.cancelButton, 7, 5, 1, 1)
+        self.progressBar = QtWidgets.QProgressBar(UpdaterDialog)
+        self.progressBar.setProperty("value", 0)
+        self.progressBar.setObjectName("progressBar")
+        self.gridLayout.addWidget(self.progressBar, 2, 1, 1, 5)
+        self.headline = QtWidgets.QLabel(UpdaterDialog)
+        sizePolicy = QtWidgets.QSizePolicy(
+            QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Fixed
+        )
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.headline.sizePolicy().hasHeightForWidth())
+        self.headline.setSizePolicy(sizePolicy)
+        font = QtGui.QFont()
+        font.setPointSize(18)
+        font.setBold(True)
+        font.setItalic(False)
+        font.setWeight(75)
+        self.headline.setFont(font)
+        self.headline.setObjectName("headline")
+        self.gridLayout.addWidget(self.headline, 0, 1, 1, 5)
+        spacerItem2 = QtWidgets.QSpacerItem(
+            20, 10, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed
+        )
+        self.gridLayout.addItem(spacerItem2, 3, 1, 1, 5)
+        self.gridLayout_2.addLayout(self.gridLayout, 0, 0, 1, 1)
+
+        self.retranslateUi(UpdaterDialog)
+        QtCore.QMetaObject.connectSlotsByName(UpdaterDialog)
+
+    def retranslateUi(self, UpdaterDialog):
+        _translate = QtCore.QCoreApplication.translate
+        UpdaterDialog.setWindowTitle(
+            _translate("UpdaterDialog", "SecureDrop Workstation preflight updater")
+        )
+        self.clientOpenButton.setText(_translate("UpdaterDialog", "Continue"))
+        self.proposedActionDescription.setText(_translate("UpdaterDialog", "Description goes here"))
+        self.rebootButton.setText(_translate("UpdaterDialog", "Reboot"))
+        self.applyUpdatesButton.setText(_translate("UpdaterDialog", "Start Updates"))
+        self.cancelButton.setText(_translate("UpdaterDialog", "Cancel"))
+        self.headline.setText(_translate("UpdaterDialog", "Headline goes here"))

launcher/sdw_util/Util.py

@@ -108,3 +108,42 @@ def is_conflicting_process_running(list):
             sdlog.error("Conflicting process '{}' is currently running.".format(name))
             return True
     return False
+
+
+def get_qubes_version():
+    """
+    Helper function for checking the Qubes version. Returns None if not on Qubes.
+    """
+    is_qubes = False
+    version = None
+    try:
+        with open("/etc/os-release") as f:
+            for line in f:
+                key, value = line.rstrip().split("=")
+                if key == "NAME" and "qubes" in value.lower():
+                    is_qubes = True
+                if key == "VERSION":
+                    version = value
+    except FileNotFoundError:
+        return None
+
+    if not is_qubes:
+        return None
+
+    return version
+
+
+def get_qt_version():
+    """
+    Determine the version of Qt appropriate for the environment we're in.
+    """
+    qubes_version = get_qubes_version()
+
+    # For now we must support both Qt4 and Qt5. We default to Qt4, because
+    # that's used in Qubes 4.0, the current stable version.
+    if qubes_version is not None and "4.1" in qubes_version:
+        default_version = 5
+    else:
+        default_version = 4
+
+    return int(os.getenv("SDW_UPDATER_QT", default_version))