torbrowser-launcher

   1 #!/usr/bin/env python
   2
   3 import os, sys, subprocess, locale, urllib2, gobject, time
   4
   5 import pygtk
   6 pygtk.require('2.0')
   7 import gtk
   8
   9 class TorBrowserLauncher:
  10   def __init__(self, current_tbb_version):
  11     # initialize the app
  12     self.current_tbb_version = current_tbb_version
  13     self.discover_arch_lang()
  14     self.build_paths()
  15     self.mkdirs()
  16
  17     launch_gui = True
  18
  19     # is TBB already installed?
  20     if os.path.isfile(self.paths['file']['start']) and os.access(self.paths['file']['start'], os.X_OK):
  21       # does the version file exist?
  22       if os.path.isfile(self.paths['file']['version']):
  23         installed_tbb_version = open(self.paths['file']['version']).read().strip()
  24
  25         if installed_tbb_version == current_tbb_version:
  26           # current version is tbb is installed, launch it
  27           self.run(False)
  28           launch_gui = False
  29         elif installed_tbb_version < self.current_tbb_version:
  30           # there is a tbb upgrade available
  31           self.set_gui('task', "Your Tor Browser is out of date. Click Start to download the latest version from https://www.torproject.org.", ['download_tarball', 'download_tarball_sig', 'verify', 'extract', 'run'])
  32         else:
  33           # for some reason the installed tbb is newer than the current version?
  34           self.set_gui('error', "Something is wrong. The version of Tor Browser Bundle you have installed is newer than the current version?", [])
  35
  36       else:
  37         # if tbb is installed but the version file doesn't exist, something is wrong
  38         self.set_gui('error', "Something is wrong. You have the Tor Browser Bundle installed, but the version file is missing.", [])
  39
  40     # not installed
  41     else:
  42       # save the current version to the file
  43       open(self.paths['file']['version'], 'w').write(self.current_tbb_version)
  44
  45       # are the tarball and sig already downloaded?
  46       if os.path.isfile(self.paths['file']['tarball']) and os.path.isfile(self.paths['file']['tarball_sig']):
  47         # start the gui with verify
  48         self.set_gui('task', "You already have Tor Browser Bundle downloaded, but it isn't installed yet.", ['verify', 'extract', 'run'])
  49
  50       # first run
  51       else:
  52         self.set_gui('task', "The first time you run the Tor Browser Launcher you need to download the Tor Browser Bundle. Click Start to download it now from https://www.torproject.org/.", ['download_tarball', 'download_tarball_sig', 'verify', 'extract', 'run'])
  53
  54     if launch_gui:
  55       self.build_ui()
  56       gtk.main()
  57
  58   # discover the architecture and language
  59   def discover_arch_lang(self):
  60     # figure out the architecture
  61     self.architecture = subprocess.check_output(['arch']).strip('\n')
  62
  63     # figure out the language
  64     available_languages = ['en-US', 'ar', 'de', 'es-ES', 'fa', 'fr', 'it', 'ko', 'nl', 'pl', 'pt-PT', 'ru', 'vi', 'zh-CN']
  65     self.language = locale.getdefaultlocale()[0].replace('_', '-')
  66     if self.language not in available_languages:
  67       self.language = self.language.split('-')[0]
  68       if self.language not in available_languages:
  69         for l in available_languages:
  70           if l[0:2] == self.language:
  71             self.language = l
  72     # if language isn't available, default to english
  73     if self.language not in available_languages:
  74       self.language = 'en-US'
  75
  76   # build all relevant paths
  77   def build_paths(self):
  78     tbb_data = os.getenv('HOME')+'/.torbrowser'
  79     tarball_filename = 'tor-browser-gnu-linux-'+self.architecture+'-'+self.current_tbb_version+'-dev-'+self.language+'.tar.gz'
  80
  81     self.paths = {
  82       'dir': {
  83         'data': tbb_data,
  84         'download': tbb_data+'/download',
  85         'tbb': tbb_data+'/tbb/'+self.architecture,
  86         'gpg': tbb_data+'/gpgtmp'
  87       },
  88       'file': {
  89         'version': tbb_data+'/version',
  90         'start': tbb_data+'/tbb/'+self.architecture+'/tor-browser_'+self.language+'/start-tor-browser',
  91         'tarball': tbb_data+'/download/'+tarball_filename,
  92         'tarball_sig': tbb_data+'/download/'+tarball_filename+'.asc',
  93         'verify': '/usr/share/torbrowser-launcher/verify.sh'
  94       },
  95       'url': {
  96         'tarball': 'https://www.torproject.org/dist/torbrowser/linux/'+tarball_filename,
  97         'tarball_sig': 'https://www.torproject.org/dist/torbrowser/linux/'+tarball_filename+'.asc'
  98       },
  99       'filename': {
 100         'tarball': tarball_filename,
 101         'tarball_sig': tarball_filename+'.asc'
 102       }
 103     }
 104
 105   # create directories that don't exist
 106   def mkdirs(self):
 107     if os.path.exists(self.paths['dir']['download']) == False:
 108       os.makedirs(self.paths['dir']['download'])
 109     if os.path.exists(self.paths['dir']['tbb']) == False:
 110       os.makedirs(self.paths['dir']['tbb'])
 111
 112   # there are different GUIs that might appear, this sets which one we want
 113   def set_gui(self, gui, message, tasks):
 114     self.gui = gui
 115     self.gui_message = message
 116     self.gui_tasks = tasks
 117
 118   # build the application's UI
 119   def build_ui(self):
 120     self.timer = False
 121
 122     # allow buttons to have icons
 123     try:
 124       settings = gtk.settings_get_default()
 125       settings.props.gtk_button_images = True
 126     except:
 127       pass
 128
 129     # set up the window
 130     self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
 131     self.window.set_title("Tor Browser")
 132     self.window.set_position(gtk.WIN_POS_CENTER)
 133     self.window.set_border_width(10)
 134     self.window.connect("delete_event", self.delete_event)
 135     self.window.connect("destroy", self.destroy)
 136
 137     self.box = gtk.VBox(False, 20)
 138     self.window.add(self.box)
 139
 140     if self.gui == 'error':
 141       # labels
 142       self.label1 = gtk.Label( self.gui_message )
 143       self.label1.set_line_wrap(True)
 144       self.box.pack_start(self.label1, True, True, 0)
 145       self.label1.show()
 146
 147       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.")
 148       self.label2.set_line_wrap(True)
 149       self.box.pack_start(self.label2, True, True, 0)
 150       self.label2.show()
 151
 152       # exit button
 153       exit_image = gtk.Image()
 154       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 155       self.exit_button = gtk.Button("Exit")
 156       self.exit_button.set_image(exit_image)
 157       self.exit_button.connect("clicked", self.destroy, None)
 158       self.box.add(self.exit_button)
 159       self.exit_button.show()
 160
 161     elif self.gui == 'task':
 162       # label
 163       self.label = gtk.Label( self.gui_message )
 164       self.label.set_line_wrap(True)
 165       self.box.pack_start(self.label, True, True, 0)
 166       self.label.show()
 167
 168       # progress bar
 169       self.progressbar = gtk.ProgressBar(adjustment=None)
 170       self.progressbar.set_orientation(gtk.PROGRESS_LEFT_TO_RIGHT)
 171       self.progressbar.set_pulse_step(0.01)
 172       self.box.pack_start(self.progressbar, True, True, 0)
 173
 174       # button box
 175       self.button_box = gtk.HButtonBox()
 176       self.button_box.set_layout(gtk.BUTTONBOX_SPREAD)
 177       self.box.pack_start(self.button_box, True, True, 0)
 178       self.button_box.show()
 179
 180       # start button
 181       start_image = gtk.Image()
 182       start_image.set_from_stock(gtk.STOCK_APPLY, gtk.ICON_SIZE_BUTTON)
 183       self.start_button = gtk.Button("Start")
 184       self.start_button.set_image(start_image)
 185       self.start_button.connect("clicked", self.start, None)
 186       self.button_box.add(self.start_button)
 187       self.start_button.show()
 188
 189       # exit button
 190       exit_image = gtk.Image()
 191       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 192       self.exit_button = gtk.Button("Exit")
 193       self.exit_button.set_image(exit_image)
 194       self.exit_button.connect("clicked", self.destroy, None)
 195       self.button_box.add(self.exit_button)
 196       self.exit_button.show()
 197
 198     self.box.show()
 199     self.window.show()
 200
 201   # start button clicked, begin tasks
 202   def start(self, widget, data=None):
 203     # disable the start button
 204     self.start_button.set_sensitive(False)
 205
 206     # start running tasks
 207     self.gui_task_i = 0
 208     self.run_task()
 209
 210   # run the next task in the task list
 211   def run_task(self):
 212     if self.gui_task_i >= len(self.gui_tasks):
 213       self.destroy(False)
 214       return
 215
 216     task = self.gui_tasks[self.gui_task_i]
 217
 218     # get ready for the next task
 219     self.gui_task_i += 1
 220
 221     if task == 'download_tarball':
 222       print 'Downloading '+self.paths['url']['tarball']
 223       self.download('tarball', self.paths['url']['tarball'], self.paths['file']['tarball'])
 224
 225     elif task == 'download_tarball_sig':
 226       print 'Downloading '+self.paths['url']['tarball_sig']
 227       self.download('signature', self.paths['url']['tarball_sig'], self.paths['file']['tarball_sig'])
 228
 229     elif task == 'verify':
 230       print 'Verifying signature'
 231       self.verify()
 232
 233     elif task == 'extract':
 234       print 'Extracting '+self.paths['filename']['tarball']
 235       self.extract()
 236
 237     elif task == 'run':
 238       print 'Running '+self.paths['file']['start']
 239       self.run()
 240
 241     elif task == 'start_over':
 242       print 'Starting download over again'
 243       self.start_over()
 244
 245
 246   def download(self, name, url, path):
 247     # initialize the progress bar
 248     self.progressbar.set_fraction(0)
 249     self.progressbar.set_text('Downloading '+name)
 250     self.progressbar.show()
 251
 252     # start the download
 253     self.dl_response = urllib2.urlopen(url)
 254     self.dl_total_size = self.dl_response.info().getheader('Content-Length').strip()
 255     self.dl_total_size = int(self.dl_total_size)
 256     self.dl_bytes_so_far = 0
 257
 258     # set a timer to download more chunks
 259     self.timer = gobject.timeout_add(1, self.download_chunk, name)
 260
 261     # open a file to write to
 262     self.file_download = open(path, 'w')
 263
 264   def download_chunk(self, name):
 265     # download 10kb a time
 266     chunk = self.dl_response.read(10240)
 267     self.dl_bytes_so_far += len(chunk)
 268     self.file_download.write(chunk)
 269
 270     if not chunk:
 271       self.file_download.close()
 272       # next task!
 273       self.run_task()
 274       return False
 275
 276     percent = float(self.dl_bytes_so_far) / self.dl_total_size
 277     self.progressbar.set_fraction(percent)
 278     percent = round(percent*100, 2)
 279     self.progressbar.set_text("Downloaded %d%% of %s" % (percent, name))
 280
 281     sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" % (self.dl_bytes_so_far, self.dl_total_size, percent))
 282
 283     if self.dl_bytes_so_far >= self.dl_total_size:
 284       sys.stdout.write('\n')
 285
 286     return True
 287
 288   def verify(self):
 289     # initialize the progress bar
 290     self.progressbar.set_fraction(0)
 291     self.progressbar.set_text('Verifying Signature')
 292     self.progressbar.show()
 293
 294     p = subprocess.Popen([self.paths['file']['verify'], self.paths['dir']['gpg'], self.paths['file']['tarball_sig']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 295     self.pulse_until_process_exits(p)
 296
 297     output = p.stdout.read()
 298
 299     if 'Good signature' in output:
 300       self.run_task()
 301     else:
 302       self.progressbar.hide()
 303       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.")
 304       self.gui_tasks = ['start_over']
 305       self.gui_task_i = 0
 306       self.start_button.set_sensitive(True)
 307
 308   def extract(self):
 309     # initialize the progress bar
 310     self.progressbar.set_fraction(0)
 311     self.progressbar.set_text('Installing')
 312     self.progressbar.show()
 313
 314     p = subprocess.Popen(['tar', '-xf', self.paths['file']['tarball'], '-C', self.paths['dir']['tbb']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 315     self.pulse_until_process_exits(p)
 316
 317     self.run_task()
 318
 319   def run(self, run_next_task = True):
 320     subprocess.Popen([self.paths['file']['start']])
 321     if run_next_task:
 322       self.run_task()
 323
 324   # make the progress bar pulse until process p (a Popen object) finishes
 325   def pulse_until_process_exits(self, p):
 326     while p.poll() == None:
 327       time.sleep(0.01)
 328       self.progressbar.pulse()
 329       # redraw gtk
 330       while gtk.events_pending():
 331          gtk.main_iteration(False)
 332
 333   # start over and download TBB again
 334   def start_over(self):
 335     self.label.set_text("Downloading Tor Browser Bundle over again.")
 336     self.gui_tasks = ['download_tarball', 'download_tarball_sig', 'verify', 'extract', 'run']
 337     self.gui_task_i = 0
 338     self.start(None)
 339
 340   # exit
 341   def delete_event(self, widget, event, data=None):
 342     return False
 343   def destroy(self, widget, data=None):
 344     if self.timer:
 345       gobject.source_remove(self.timer)
 346     self.timer = False
 347
 348     gtk.main_quit()
 349
 350 if __name__ == "__main__":
 351   current_tbl_version = '0.1'
 352   current_tbb_version = '2.3.25-2'
 353
 354   print 'Tor Browser Launcher'
 355   print 'version %s' % (current_tbl_version)
 356   print 'https://github.com/micahflee/torbrowser-launcher'
 357
 358   app = TorBrowserLauncher(current_tbb_version)
 359