torbrowser-launcher

   1 #!/usr/bin/env python
   2
   3 from twisted.internet import gtk2reactor
   4 gtk2reactor.install()
   5 from twisted.internet import reactor
   6
   7 import pygtk
   8 pygtk.require('2.0')
   9 import gtk
  10
  11 import os, sys, subprocess, locale, urllib2, gobject, time
  12
  13 from twisted.web.client import Agent, ResponseDone
  14 from twisted.web.http_headers import Headers
  15 from twisted.internet.protocol import Protocol
  16
  17
  18 class TorBrowserLauncher:
  19   def __init__(self, current_tbb_version):
  20     # initialize the app
  21     self.current_tbb_version = current_tbb_version
  22     self.discover_arch_lang()
  23     self.build_paths()
  24     self.mkdirs()
  25
  26     launch_gui = True
  27
  28     # is TBB already installed?
  29     if os.path.isfile(self.paths['file']['start']) and os.access(self.paths['file']['start'], os.X_OK):
  30       # does the version file exist?
  31       if os.path.isfile(self.paths['file']['version']):
  32         installed_tbb_version = open(self.paths['file']['version']).read().strip()
  33
  34         if installed_tbb_version == current_tbb_version:
  35           # current version is tbb is installed, launch it
  36           self.run(False)
  37           launch_gui = False
  38         elif installed_tbb_version < self.current_tbb_version:
  39           # there is a tbb upgrade available
  40           self.set_gui('task', "Your Tor Browser is out of date.",
  41             ['download_tarball',
  42              'download_tarball_sig',
  43              'verify',
  44              'extract',
  45              'run'])
  46         else:
  47           # for some reason the installed tbb is newer than the current version?
  48           self.set_gui('error', "Something is wrong. The version of Tor Browser Bundle you have installed is newer than the current version?", [])
  49
  50       else:
  51         # if tbb is installed but the version file doesn't exist, something is wrong
  52         self.set_gui('error', "Something is wrong. You have the Tor Browser Bundle installed, but the version file is missing.", [])
  53
  54     # not installed
  55     else:
  56       # save the current version to the file
  57       open(self.paths['file']['version'], 'w').write(self.current_tbb_version)
  58
  59       # are the tarball and sig already downloaded?
  60       if os.path.isfile(self.paths['file']['tarball']) and os.path.isfile(self.paths['file']['tarball_sig']):
  61         # start the gui with verify
  62         self.set_gui('task', "Installing Tor Browser.",
  63           ['verify',
  64            'extract',
  65            'run'])
  66
  67       # first run
  68       else:
  69         self.set_gui('task', "Downloading and installing Tor Browser.",
  70           ['download_tarball',
  71            'download_tarball_sig',
  72            'verify',
  73            'extract',
  74            'run'])
  75
  76     if launch_gui:
  77       self.build_ui()
  78       #gtk.main()
  79       reactor.run()
  80
  81   # discover the architecture and language
  82   def discover_arch_lang(self):
  83     # figure out the architecture
  84     (sysname, nodename, release, version, machine) = os.uname()
  85     self.architecture = machine
  86
  87     # figure out the language
  88     available_languages = ['en-US', 'ar', 'de', 'es-ES', 'fa', 'fr', 'it', 'ko', 'nl', 'pl', 'pt-PT', 'ru', 'vi', 'zh-CN']
  89     default_locale = locale.getdefaultlocale()[0]
  90     if default_locale == None:
  91       self.language = 'en-US'
  92     else:
  93       self.language = default_locale.replace('_', '-')
  94       if self.language not in available_languages:
  95         self.language = self.language.split('-')[0]
  96         if self.language not in available_languages:
  97           for l in available_languages:
  98             if l[0:2] == self.language:
  99               self.language = l
 100       # if language isn't available, default to english
 101       if self.language not in available_languages:
 102         self.language = 'en-US'
 103
 104   # build all relevant paths
 105   def build_paths(self):
 106     tbb_data = os.getenv('HOME')+'/.torbrowser'
 107     tarball_filename = 'tor-browser-gnu-linux-'+self.architecture+'-'+self.current_tbb_version+'-dev-'+self.language+'.tar.gz'
 108
 109     self.paths = {
 110       'dir': {
 111         'data': tbb_data,
 112         'download': tbb_data+'/download',
 113         'tbb': tbb_data+'/tbb/'+self.architecture,
 114         'gpg': tbb_data+'/gpgtmp'
 115       },
 116       'file': {
 117         'version': tbb_data+'/version',
 118         'start': tbb_data+'/tbb/'+self.architecture+'/tor-browser_'+self.language+'/start-tor-browser',
 119         'tarball': tbb_data+'/download/'+tarball_filename,
 120         'tarball_sig': tbb_data+'/download/'+tarball_filename+'.asc',
 121         'verify': '/usr/share/torbrowser-launcher/verify.sh'
 122       },
 123       'url': {
 124         'tarball': 'https://www.torproject.org/dist/torbrowser/linux/'+tarball_filename,
 125         'tarball_sig': 'https://www.torproject.org/dist/torbrowser/linux/'+tarball_filename+'.asc'
 126       },
 127       'filename': {
 128         'tarball': tarball_filename,
 129         'tarball_sig': tarball_filename+'.asc'
 130       }
 131     }
 132
 133   # create directories that don't exist
 134   def mkdirs(self):
 135     if os.path.exists(self.paths['dir']['download']) == False:
 136       os.makedirs(self.paths['dir']['download'])
 137     if os.path.exists(self.paths['dir']['tbb']) == False:
 138       os.makedirs(self.paths['dir']['tbb'])
 139
 140   # there are different GUIs that might appear, this sets which one we want
 141   def set_gui(self, gui, message, tasks, autostart=True):
 142     self.gui = gui
 143     self.gui_message = message
 144     self.gui_tasks = tasks
 145     self.gui_autostart = autostart
 146
 147   # build the application's UI
 148   def build_ui(self):
 149     self.timer = False
 150
 151     # allow buttons to have icons
 152     try:
 153       settings = gtk.settings_get_default()
 154       settings.props.gtk_button_images = True
 155     except:
 156       pass
 157
 158     # set up the window
 159     self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
 160     self.window.set_title("Tor Browser")
 161     self.window.set_position(gtk.WIN_POS_CENTER)
 162     self.window.set_border_width(10)
 163     self.window.connect("delete_event", self.delete_event)
 164     self.window.connect("destroy", self.destroy)
 165
 166     self.box = gtk.VBox(False, 20)
 167     self.window.add(self.box)
 168
 169     if self.gui == 'error':
 170       # labels
 171       self.label1 = gtk.Label( self.gui_message )
 172       self.label1.set_line_wrap(True)
 173       self.box.pack_start(self.label1, True, True, 0)
 174       self.label1.show()
 175
 176       self.label2 = gtk.Label("You can fix the problem by deleting:\n"+self.paths['dir']['data']+"\n\nHowever, you will lose all your bookmarks and other Tor Browser preferences.")
 177       self.label2.set_line_wrap(True)
 178       self.box.pack_start(self.label2, True, True, 0)
 179       self.label2.show()
 180
 181       # exit button
 182       exit_image = gtk.Image()
 183       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 184       self.exit_button = gtk.Button("Exit")
 185       self.exit_button.set_image(exit_image)
 186       self.exit_button.connect("clicked", self.destroy, None)
 187       self.box.add(self.exit_button)
 188       self.exit_button.show()
 189
 190     elif self.gui == 'task':
 191       # label
 192       self.label = gtk.Label( self.gui_message )
 193       self.label.set_line_wrap(True)
 194       self.box.pack_start(self.label, True, True, 0)
 195       self.label.show()
 196
 197       # progress bar
 198       self.progressbar = gtk.ProgressBar(adjustment=None)
 199       self.progressbar.set_orientation(gtk.PROGRESS_LEFT_TO_RIGHT)
 200       self.progressbar.set_pulse_step(0.01)
 201       self.box.pack_start(self.progressbar, True, True, 0)
 202
 203       # button box
 204       self.button_box = gtk.HButtonBox()
 205       self.button_box.set_layout(gtk.BUTTONBOX_SPREAD)
 206       self.box.pack_start(self.button_box, True, True, 0)
 207       self.button_box.show()
 208
 209       # start button
 210       start_image = gtk.Image()
 211       start_image.set_from_stock(gtk.STOCK_APPLY, gtk.ICON_SIZE_BUTTON)
 212       self.start_button = gtk.Button("Start")
 213       self.start_button.set_image(start_image)
 214       self.start_button.connect("clicked", self.start, None)
 215       self.button_box.add(self.start_button)
 216       if not self.gui_autostart:
 217         self.start_button.show()
 218
 219       # exit button
 220       exit_image = gtk.Image()
 221       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 222       self.exit_button = gtk.Button("Exit")
 223       self.exit_button.set_image(exit_image)
 224       self.exit_button.connect("clicked", self.destroy, None)
 225       self.button_box.add(self.exit_button)
 226       self.exit_button.show()
 227
 228     self.box.show()
 229     self.window.show()
 230
 231     if self.gui_autostart:
 232       self.start(None)
 233
 234   # start button clicked, begin tasks
 235   def start(self, widget, data=None):
 236     # disable the start button
 237     self.start_button.set_sensitive(False)
 238
 239     # start running tasks
 240     self.gui_task_i = 0
 241     self.run_task()
 242
 243   # run the next task in the task list
 244   def run_task(self):
 245     self.refresh_gtk()
 246
 247     if self.gui_task_i >= len(self.gui_tasks):
 248       self.destroy(False)
 249       return
 250
 251     task = self.gui_tasks[self.gui_task_i]
 252
 253     # get ready for the next task
 254     self.gui_task_i += 1
 255
 256     if task == 'download_tarball':
 257       print 'Downloading '+self.paths['url']['tarball']
 258       self.download('tarball', self.paths['url']['tarball'], self.paths['file']['tarball'])
 259
 260     elif task == 'download_tarball_sig':
 261       print 'Downloading '+self.paths['url']['tarball_sig']
 262       self.download('signature', self.paths['url']['tarball_sig'], self.paths['file']['tarball_sig'])
 263
 264     elif task == 'verify':
 265       print 'Verifying signature'
 266       self.verify()
 267
 268     elif task == 'extract':
 269       print 'Extracting '+self.paths['filename']['tarball']
 270       self.extract()
 271
 272     elif task == 'run':
 273       print 'Running '+self.paths['file']['start']
 274       self.run()
 275
 276     elif task == 'start_over':
 277       print 'Starting download over again'
 278       self.start_over()
 279
 280   def response_received(self, response):
 281     class FileDownloader(Protocol):
 282       def __init__(self, file, total, progress, done_cb):
 283         self.file = file
 284         self.total = total
 285         self.so_far = 0
 286         self.progress = progress
 287         self.all_done = done_cb
 288
 289       def dataReceived(self, bytes):
 290         self.file.write(bytes)
 291         self.so_far += len(bytes)
 292         percent = float(self.so_far) / float(self.total)
 293         self.progress.set_fraction(percent)
 294         amount = float(self.so_far)
 295         units = "bytes"
 296         for (size, unit) in [(1000000, "MB"), (1000, "KB")]:
 297           if amount > size:
 298             units = unit
 299             amount = amount / float(size)
 300             break
 301
 302         self.progress.set_text('Downloaded %2.1f%% (%2.1f %s)' % ((percent * 100.0), amount, units))
 303
 304       def connectionLost(self, reason):
 305         print 'Finished receiving body:', reason.getErrorMessage()
 306         self.all_done(reason)
 307
 308     dl = FileDownloader(self.file_download, response.length, self.progressbar, self.response_finished)
 309     response.deliverBody(dl)
 310
 311
 312   def response_finished(self, msg):
 313     print dir(msg)
 314     if msg.check(ResponseDone):
 315       self.file_download.close()
 316       # next task!
 317       self.run_task()
 318
 319     else:
 320       print "FINISHED", msg
 321       ## FIXME handle errors
 322
 323
 324   def download(self, name, url, path):
 325     # initialize the progress bar
 326     self.progressbar.set_fraction(0)
 327     self.progressbar.set_text('Downloading '+name)
 328     self.progressbar.show()
 329     self.refresh_gtk()
 330
 331     agent = Agent(reactor)
 332     d = agent.request('GET', url,
 333                       Headers({'User-Agent': ['torbrowser-launcher']}),
 334                       None)
 335
 336     self.file_download = open(path, 'w')
 337     d.addCallback(self.response_received)
 338
 339   def download_chunk(self, name):
 340     # download 10kb a time
 341     chunk = self.dl_response.read(10240)
 342     self.dl_bytes_so_far += len(chunk)
 343     self.file_download.write(chunk)
 344
 345     if not chunk:
 346       self.file_download.close()
 347       # next task!
 348       self.run_task()
 349       return False
 350
 351     percent = float(self.dl_bytes_so_far) / self.dl_total_size
 352     self.progressbar.set_fraction(percent)
 353     percent = round(percent*100, 2)
 354     self.progressbar.set_text("Downloaded %d%% of %s" % (percent, name))
 355     self.refresh_gtk()
 356
 357     sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" % (self.dl_bytes_so_far, self.dl_total_size, percent))
 358
 359     if self.dl_bytes_so_far >= self.dl_total_size:
 360       sys.stdout.write('\n')
 361
 362     return True
 363
 364   def verify(self):
 365     # initialize the progress bar
 366     self.progressbar.set_fraction(0)
 367     self.progressbar.set_text('Verifying Signature')
 368     self.progressbar.show()
 369
 370     p = subprocess.Popen([self.paths['file']['verify'], self.paths['dir']['gpg'], self.paths['file']['tarball_sig']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 371     self.pulse_until_process_exits(p)
 372
 373     output = p.stdout.read()
 374
 375     if 'Good signature' in output:
 376       self.run_task()
 377     else:
 378       self.progressbar.hide()
 379       self.label.set_text("SIGNATURE VERIFICATION FAILED!\n\nYou might be under attack, or there might just be a networking problem. Click Start try the download again.")
 380       self.gui_tasks = ['start_over']
 381       self.gui_task_i = 0
 382       self.start_button.show()
 383       self.start_button.set_sensitive(True)
 384
 385   def extract(self):
 386     # initialize the progress bar
 387     self.progressbar.set_fraction(0)
 388     self.progressbar.set_text('Installing')
 389     self.progressbar.show()
 390
 391     p = subprocess.Popen(['tar', '-xf', self.paths['file']['tarball'], '-C', self.paths['dir']['tbb']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 392     self.pulse_until_process_exits(p)
 393
 394     self.run_task()
 395
 396   def run(self, run_next_task = True):
 397     subprocess.Popen([self.paths['file']['start']])
 398     if run_next_task:
 399       self.run_task()
 400
 401   # make the progress bar pulse until process p (a Popen object) finishes
 402   def pulse_until_process_exits(self, p):
 403     while p.poll() == None:
 404       time.sleep(0.01)
 405       self.progressbar.pulse()
 406       self.refresh_gtk()
 407
 408   # start over and download TBB again
 409   def start_over(self):
 410     self.label.set_text("Downloading Tor Browser Bundle over again.")
 411     self.gui_tasks = ['download_tarball', 'download_tarball_sig', 'verify', 'extract', 'run']
 412     self.gui_task_i = 0
 413     self.start(None)
 414
 415   # refresh gtk
 416   def refresh_gtk(self):
 417     while gtk.events_pending():
 418        gtk.main_iteration(False)
 419
 420   # exit
 421   def delete_event(self, widget, event, data=None):
 422     return False
 423   def destroy(self, widget, data=None):
 424     if self.timer:
 425       gobject.source_remove(self.timer)
 426     self.timer = False
 427
 428     self.file_download.close()
 429     reactor.stop()
 430
 431 if __name__ == "__main__":
 432   current_tbl_version = '0.1'
 433   current_tbb_version = '2.3.25-2'
 434
 435   print 'Tor Browser Launcher'
 436   print 'version %s' % (current_tbl_version)
 437   print 'https://github.com/micahflee/torbrowser-launcher'
 438
 439   app = TorBrowserLauncher(current_tbb_version)
 440