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