summaryrefslogtreecommitdiff
path: root/src/leap/bitmask/gui/app.py
blob: 2edb5bfdd14779a35e6142703d1b2348262fe7a1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
# -*- coding: utf-8 -*-
# app.py
# Copyright (C) 2016-2017 LEAP Encryption Acess Project
#
# 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 3 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/>.

"""
Main entrypoint for the Bitmask Qt GUI.
It just launches a wekbit browser that runs the local web-ui served by bitmaskd
when the web service is running.
"""

import os
import platform
import signal
import sys
import time
import webbrowser

from functools import partial
from multiprocessing import Process

from leap.bitmask.core.launcher import run_bitmaskd, pid
from leap.bitmask.gui import app_rc
from leap.common.config import get_path_prefix

if platform.system() == 'Windows':
    from multiprocessing import freeze_support
    from PySide import QtCore, QtGui
    from PySide.QtGui import QDialog
    from PySide.QtGui import QApplication
    from PySide.QtWebKit import QWebView, QGraphicsWebView
else:
    from PyQt5 import QtCore, QtGui
    from PyQt5.QtCore import QObject, pyqtSlot
    from PyQt5.QtWidgets import QApplication
    from PyQt5.QtGui import QIcon
    from PyQt5.QtGui import QPixmap
    from PyQt5.QtWidgets import QAction
    from PyQt5.QtWidgets import QMenu
    from PyQt5.QtWidgets import QDialog
    from PyQt5.QtWidgets import QMessageBox

    try:
        from PyQt5.QtWebKitWidgets import QWebView
        from PyQt5.QtWebKit import QWebSettings
    except ImportError:
        from PyQt5.QtWebEngineWidgets import QWebEngineView as QWebView
        from PyQt5.QtWebEngineWidgets import QWebEngineSettings as QWebSettings

from .systray import WithTrayIcon


IS_WIN = platform.system() == "Windows"
DEBUG = os.environ.get("DEBUG", False)

BITMASK_URI = 'http://localhost:7070/'
PIXELATED_URI = 'http://localhost:9090/'

qApp = None
bitmaskd = None
browser = None



class BrowserWindow(QWebView, WithTrayIcon):
    """
    This qt-webkit window exposes a couple of callable objects through the
    python-js bridge:

        bitmaskApp.shutdown() -> shut downs the backend and frontend.
        bitmaskApp.openSystemBrowser(url) -> opens URL in system browser
        bitmaskBrowser.openPixelated() -> opens Pixelated app in a new window.

    This BrowserWindow assumes that the backend is already running, since it is
    going to look for the authtoken in the configuration folder.
    """
    def __init__(self, *args, **kw):
        url = kw.pop('url', None)
        first = False
        if not url:
            url = "http://localhost:7070"
            path = os.path.join(get_path_prefix(), 'leap', 'authtoken')
            waiting = 20
            while not os.path.isfile(path):
                if waiting == 0:
                    # If we arrive here, something really messed up happened,
                    # because touching the token file is one of the first
                    # things the backend does, and this BrowserWindow
                    # should be called *right after* launching the backend.
                    raise NoAuthToken(
                        'No authentication token found!')
                time.sleep(0.1)
                waiting -= 1
            token = open(path).read().strip()
            url += '#' + token
            first = True
        self.url = url
        self.closing = False

        super(QWebView, self).__init__(*args, **kw)
        self.setWindowTitle('Bitmask')
        self.bitmask_browser = NewPageConnector(self) if first else None
        self.loadPage(self.url)

        self.proxy = AppProxy(self) if first else None
        self.frame.addToJavaScriptWindowObject(
            "bitmaskApp", self.proxy)

        icon = QtGui.QIcon()
        icon.addPixmap(
            QtGui.QPixmap(":/mask-icon.png"),
            QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.setWindowIcon(icon)

    def loadPage(self, web_page):
        try:
            if os.environ.get('DEBUG'):
                self.settings().setAttribute(
	            QWebSettings.DeveloperExtrasEnabled, True)
        except Exception:
            pass

        if os.environ.get('DEBUG'):
            self.inspector = QWebInspector(self)
            self.inspector.setPage(self.page())
            self.inspector.show()

        if os.path.isabs(web_page):
            web_page = os.path.relpath(web_page)

        url = QtCore.QUrl(web_page)
        # TODO -- port this to QWebEngine
        self.frame = self.page().mainFrame()
        self.frame.addToJavaScriptWindowObject(
            "bitmaskBrowser", self.bitmask_browser)
        self.load(url)

    def shutdown(self, *args):
        if self.closing:
            return
        self.closing = True
        global bitmaskd
        bitmaskd.join()
        if os.path.isfile(pid):
            with open(pid) as f:
                pidno = int(f.read())
            print('[bitmask] terminating bitmaskd...')
            os.kill(pidno, signal.SIGTERM)
        print('[bitmask] shutting down gui...')
        try:
            self.stop()
            try:
                global pixbrowser
                pixbrowser.stop()
                del pixbrowser
            except:
                pass
            QtCore.QTimer.singleShot(0, qApp.deleteLater)

        except Exception as ex:
            print('exception catched: %r' % ex)
            sys.exit(1)


class AppProxy(QObject):

    @pyqtSlot()
    def shutdown(self):
        """To be exposed from the js bridge"""
        global browser
        if browser:
            browser.user_closed = True
            browser.close()

    @pyqtSlot(str)
    def openSystemBrowser(self, url):
        webbrowser.open(url)


pixbrowser = None


class NewPageConnector(QObject):

    @pyqtSlot()
    def openPixelated(self):
        global pixbrowser
        pixbrowser = BrowserWindow(url=PIXELATED_URI)
        pixbrowser.show()


def _handle_kill(*args, **kw):
    win = kw.get('win')
    if win:
        QtCore.QTimer.singleShot(0, win.close)
    global pixbrowser
    if pixbrowser:
        QtCore.QTimer.singleShot(0, pixbrowser.close)


def launch_gui():
    global qApp
    global bitmaskd
    global browser

    if IS_WIN:
        freeze_support()
    bitmaskd = Process(target=run_bitmaskd)
    bitmaskd.start()

    qApp = QApplication([])
    try:
        browser = BrowserWindow(None)
    except NoAuthToken as e:
        print('ERROR: ' + e.message)
        sys.exit(1)

    browser.setupSysTray()

    qApp.setQuitOnLastWindowClosed(True)
    qApp.lastWindowClosed.connect(browser.shutdown)

    signal.signal(
        signal.SIGINT,
        partial(_handle_kill, win=browser))

    # Avoid code to get stuck inside c++ loop, returning control
    # to python land.
    timer = QtCore.QTimer()
    timer.timeout.connect(lambda: None)
    timer.start(500)

    browser.show()
        
    sys.exit(qApp.exec_())


def start_app():
    from leap.bitmask.util import STANDALONE
    os.environ['QT_AUTO_SCREEN_SCALE_FACTOR'] = '1'

    # Allow the frozen binary in the bundle double as the cli entrypoint
    # Why have only a user interface when you can have two?

    if platform.system() == 'Windows':
        # In windows, there are some args added to the invocation
        # by PyInstaller, I guess...
        MIN_ARGS = 3
    else:
        MIN_ARGS = 1

    # DEBUG ====================================
    if STANDALONE and len(sys.argv) > MIN_ARGS:
        if sys.argv[1] == 'bitmask_helpers':
            from leap.bitmask.vpn.helpers import main
            return main()

        from leap.bitmask.cli import bitmask_cli
        return bitmask_cli.main()

    prev_auth = os.path.join(get_path_prefix(), 'leap', 'authtoken')
    try:
        os.remove(prev_auth)
    except OSError:
        pass

    launch_gui()


class NoAuthToken(Exception):
    pass


if __name__ == "__main__":
    start_app()