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     settings = gtk.settings_get_default()
 124     settings.props.gtk_button_images = True
 125
 126     # set up the window
 127     self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
 128     self.window.set_title("Tor Browser Launcher")
 129     self.window.set_position(gtk.WIN_POS_CENTER)
 130     self.window.set_border_width(10)
 131     self.window.connect("delete_event", self.delete_event)
 132     self.window.connect("destroy", self.destroy)
 133
 134     self.box = gtk.VBox(False, 20)
 135     self.window.add(self.box)
 136
 137     if self.gui == 'error':
 138       # labels
 139       self.label1 = gtk.Label( self.gui_message );
 140       self.label1.set_line_wrap(True)
 141       self.box.pack_start(self.label1, True, True, 0)
 142       self.label1.show()
 143
 144       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.");
 145       self.label2.set_line_wrap(True)
 146       self.box.pack_start(self.label2, True, True, 0)
 147       self.label2.show()
 148
 149       # exit button
 150       exit_image = gtk.Image()
 151       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 152       self.exit_button = gtk.Button("Exit")
 153       self.exit_button.set_image(exit_image)
 154       self.exit_button.connect("clicked", self.destroy, None)
 155       self.box.add(self.exit_button)
 156       self.exit_button.show()
 157
 158     elif self.gui == 'task':
 159       # label
 160       self.label = gtk.Label( self.gui_message );
 161       self.label.set_line_wrap(True)
 162       self.box.pack_start(self.label, True, True, 0)
 163       self.label.show()
 164
 165       # progress bar
 166       self.progressbar = gtk.ProgressBar(adjustment=None)
 167       self.progressbar.set_orientation(gtk.PROGRESS_LEFT_TO_RIGHT)
 168       self.progressbar.set_pulse_step(0.01)
 169       self.box.pack_start(self.progressbar, True, True, 0)
 170
 171       # button box
 172       self.button_box = gtk.HButtonBox()
 173       self.button_box.set_layout(gtk.BUTTONBOX_SPREAD)
 174       self.box.pack_start(self.button_box, True, True, 0)
 175       self.button_box.show()
 176
 177       # start button
 178       start_image = gtk.Image()
 179       start_image.set_from_stock(gtk.STOCK_APPLY, gtk.ICON_SIZE_BUTTON)
 180       self.start_button = gtk.Button("Start")
 181       self.start_button.set_image(start_image)
 182       self.start_button.connect("clicked", self.start, None)
 183       self.button_box.add(self.start_button)
 184       self.start_button.show()
 185
 186       # exit button
 187       exit_image = gtk.Image()
 188       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 189       self.exit_button = gtk.Button("Exit")
 190       self.exit_button.set_image(exit_image)
 191       self.exit_button.connect("clicked", self.destroy, None)
 192       self.button_box.add(self.exit_button)
 193       self.exit_button.show()
 194
 195     self.box.show()
 196     self.window.show();
 197
 198   # start button clicked, begin tasks
 199   def start(self, widget, data=None):
 200     # disable the start button
 201     self.start_button.set_sensitive(False)
 202
 203     # start running tasks
 204     self.gui_task_i = 0
 205     self.run_task()
 206
 207   # run the next task in the task list
 208   def run_task(self):
 209     if self.gui_task_i >= len(self.gui_tasks):
 210       self.destroy(False)
 211       return
 212
 213     task = self.gui_tasks[self.gui_task_i]
 214
 215     # get ready for the next task
 216     self.gui_task_i += 1
 217
 218     if task == 'download_tarball':
 219       print 'Downloading '+self.paths['url']['tarball']
 220       self.download('tarball', self.paths['url']['tarball'], self.paths['file']['tarball'])
 221
 222     elif task == 'download_tarball_sig':
 223       print 'Downloading '+self.paths['url']['tarball_sig']
 224       self.download('signature', self.paths['url']['tarball_sig'], self.paths['file']['tarball_sig'])
 225
 226     elif task == 'verify':
 227       print 'Verifying signature'
 228       self.verify()
 229
 230     elif task == 'extract':
 231       print 'Extracting '+self.paths['filename']['tarball']
 232       self.extract()
 233
 234     elif task == 'run':
 235       print 'Running '+self.paths['file']['start']
 236       self.run()
 237
 238     elif task == 'start_over':
 239       print 'Starting download over again'
 240       self.start_over()
 241
 242
 243   def download(self, name, url, path):
 244     # initialize the progress bar
 245     self.progressbar.set_fraction(0)
 246     self.progressbar.set_text('Downloading '+name)
 247     self.progressbar.show()
 248
 249     # start the download
 250     self.dl_response = urllib2.urlopen(url);
 251     self.dl_total_size = self.dl_response.info().getheader('Content-Length').strip()
 252     self.dl_total_size = int(self.dl_total_size)
 253     self.dl_bytes_so_far = 0
 254
 255     # set a timer to download more chunks
 256     self.timer = gobject.timeout_add(1, self.download_chunk, name)
 257
 258     # open a file to write to
 259     self.file_download = open(path, 'w')
 260
 261   def download_chunk(self, name):
 262     # download 10kb a time
 263     chunk = self.dl_response.read(10240)
 264     self.dl_bytes_so_far += len(chunk)
 265     self.file_download.write(chunk)
 266
 267     if not chunk:
 268       self.file_download.close()
 269       # next task!
 270       self.run_task()
 271       return False
 272
 273     percent = float(self.dl_bytes_so_far) / self.dl_total_size
 274     self.progressbar.set_fraction(percent)
 275     percent = round(percent*100, 2)
 276     self.progressbar.set_text("Downloaded %d%% of %s" % (percent, name))
 277
 278     sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" % (self.dl_bytes_so_far, self.dl_total_size, percent))
 279
 280     if self.dl_bytes_so_far >= self.dl_total_size:
 281       sys.stdout.write('\n')
 282
 283     return True
 284
 285   def verify(self):
 286     # initialize the progress bar
 287     self.progressbar.set_fraction(0)
 288     self.progressbar.set_text('Verifying Signature')
 289     self.progressbar.show()
 290
 291     p = subprocess.Popen([self.paths['file']['verify'], self.paths['dir']['gpg'], self.paths['file']['tarball_sig']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 292     self.pulse_until_process_exits(p)
 293
 294     output = p.stdout.read()
 295
 296     if 'Good signature' in output:
 297       self.run_task();
 298     else:
 299       self.progressbar.hide()
 300       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.")
 301       self.gui_tasks = ['start_over']
 302       self.gui_task_i = 0
 303       self.start_button.set_sensitive(True)
 304
 305   def extract(self):
 306     # initialize the progress bar
 307     self.progressbar.set_fraction(0)
 308     self.progressbar.set_text('Installing')
 309     self.progressbar.show()
 310
 311     p = subprocess.Popen(['tar', '-xf', self.paths['file']['tarball'], '-C', self.paths['dir']['tbb']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 312     self.pulse_until_process_exits(p)
 313
 314     self.run_task();
 315
 316   def run(self, run_next_task = True):
 317     subprocess.Popen([self.paths['file']['start']])
 318     if run_next_task:
 319       self.run_task();
 320
 321   # make the progress bar pulse until process p (a Popen object) finishes
 322   def pulse_until_process_exits(self, p):
 323     while p.poll() == None:
 324       time.sleep(0.01)
 325       self.progressbar.pulse()
 326       # redraw gtk
 327       while gtk.events_pending():
 328          gtk.main_iteration(False)
 329
 330   # start over and download TBB again
 331   def start_over(self):
 332     self.label.set_text("Downloading Tor Browser Bundle over again.")
 333     self.gui_tasks = ['download_tarball', 'download_tarball_sig', 'verify', 'extract', 'run']
 334     self.gui_task_i = 0
 335     self.start(None)
 336
 337   # exit
 338   def delete_event(self, widget, event, data=None):
 339     return False
 340   def destroy(self, widget, data=None):
 341     if self.timer:
 342       gobject.source_remove(self.timer)
 343     self.timer = False
 344
 345     gtk.main_quit()
 346
 347 if __name__ == "__main__":
 348   print 'Tor Browser Launcher'
 349   print 'https://github.com/micahflee/torbrowser-launcher'
 350
 351   current_tbb_version = '2.3.25-2'
 352   app = TorBrowserLauncher(current_tbb_version)
 353