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.",
  32             ['download_tarball',
  33              'download_tarball_sig',
  34              'verify',
  35              'extract',
  36              'run'])
  37         else:
  38           # for some reason the installed tbb is newer than the current version?
  39           self.set_gui('error', "Something is wrong. The version of Tor Browser Bundle you have installed is newer than the current version?", [])
  40
  41       else:
  42         # if tbb is installed but the version file doesn't exist, something is wrong
  43         self.set_gui('error', "Something is wrong. You have the Tor Browser Bundle installed, but the version file is missing.", [])
  44
  45     # not installed
  46     else:
  47       # save the current version to the file
  48       open(self.paths['file']['version'], 'w').write(self.current_tbb_version)
  49
  50       # are the tarball and sig already downloaded?
  51       if os.path.isfile(self.paths['file']['tarball']) and os.path.isfile(self.paths['file']['tarball_sig']):
  52         # start the gui with verify
  53         self.set_gui('task', "Installing Tor Browser.",
  54           ['verify',
  55            'extract',
  56            'run'])
  57
  58       # first run
  59       else:
  60         self.set_gui('task', "Downloading and installing Tor Browser.",
  61           ['download_tarball',
  62            'download_tarball_sig',
  63            'verify',
  64            'extract',
  65            'run'])
  66
  67     if launch_gui:
  68       self.build_ui()
  69       gtk.main()
  70
  71   # discover the architecture and language
  72   def discover_arch_lang(self):
  73     # figure out the architecture
  74     (sysname, nodename, release, version, machine) = os.uname()
  75     self.architecture = machine
  76
  77     # figure out the language
  78     available_languages = ['en-US', 'ar', 'de', 'es-ES', 'fa', 'fr', 'it', 'ko', 'nl', 'pl', 'pt-PT', 'ru', 'vi', 'zh-CN']
  79     default_locale = locale.getdefaultlocale()[0]
  80     if default_locale == None:
  81       self.language = 'en-US'
  82     else:
  83       self.language = default_locale.replace('_', '-')
  84       if self.language not in available_languages:
  85         self.language = self.language.split('-')[0]
  86         if self.language not in available_languages:
  87           for l in available_languages:
  88             if l[0:2] == self.language:
  89               self.language = l
  90       # if language isn't available, default to english
  91       if self.language not in available_languages:
  92         self.language = 'en-US'
  93
  94   # build all relevant paths
  95   def build_paths(self):
  96     tbb_data = os.getenv('HOME')+'/.torbrowser'
  97     tarball_filename = 'tor-browser-gnu-linux-'+self.architecture+'-'+self.current_tbb_version+'-dev-'+self.language+'.tar.gz'
  98
  99     self.paths = {
 100       'dir': {
 101         'data': tbb_data,
 102         'download': tbb_data+'/download',
 103         'tbb': tbb_data+'/tbb/'+self.architecture,
 104         'gpg': tbb_data+'/gpgtmp'
 105       },
 106       'file': {
 107         'version': tbb_data+'/version',
 108         'start': tbb_data+'/tbb/'+self.architecture+'/tor-browser_'+self.language+'/start-tor-browser',
 109         'tarball': tbb_data+'/download/'+tarball_filename,
 110         'tarball_sig': tbb_data+'/download/'+tarball_filename+'.asc',
 111         'verify': '/usr/share/torbrowser-launcher/verify.sh'
 112       },
 113       'url': {
 114         'tarball': 'https://www.torproject.org/dist/torbrowser/linux/'+tarball_filename,
 115         'tarball_sig': 'https://www.torproject.org/dist/torbrowser/linux/'+tarball_filename+'.asc'
 116       },
 117       'filename': {
 118         'tarball': tarball_filename,
 119         'tarball_sig': tarball_filename+'.asc'
 120       }
 121     }
 122
 123   # create directories that don't exist
 124   def mkdirs(self):
 125     if os.path.exists(self.paths['dir']['download']) == False:
 126       os.makedirs(self.paths['dir']['download'])
 127     if os.path.exists(self.paths['dir']['tbb']) == False:
 128       os.makedirs(self.paths['dir']['tbb'])
 129
 130   # there are different GUIs that might appear, this sets which one we want
 131   def set_gui(self, gui, message, tasks, autostart=True):
 132     self.gui = gui
 133     self.gui_message = message
 134     self.gui_tasks = tasks
 135     self.gui_autostart = autostart
 136
 137   # build the application's UI
 138   def build_ui(self):
 139     self.timer = False
 140
 141     # allow buttons to have icons
 142     try:
 143       settings = gtk.settings_get_default()
 144       settings.props.gtk_button_images = True
 145     except:
 146       pass
 147
 148     # set up the window
 149     self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
 150     self.window.set_title("Tor Browser")
 151     self.window.set_position(gtk.WIN_POS_CENTER)
 152     self.window.set_border_width(10)
 153     self.window.connect("delete_event", self.delete_event)
 154     self.window.connect("destroy", self.destroy)
 155
 156     self.box = gtk.VBox(False, 20)
 157     self.window.add(self.box)
 158
 159     if self.gui == 'error':
 160       # labels
 161       self.label1 = gtk.Label( self.gui_message )
 162       self.label1.set_line_wrap(True)
 163       self.box.pack_start(self.label1, True, True, 0)
 164       self.label1.show()
 165
 166       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.")
 167       self.label2.set_line_wrap(True)
 168       self.box.pack_start(self.label2, True, True, 0)
 169       self.label2.show()
 170
 171       # exit button
 172       exit_image = gtk.Image()
 173       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 174       self.exit_button = gtk.Button("Exit")
 175       self.exit_button.set_image(exit_image)
 176       self.exit_button.connect("clicked", self.destroy, None)
 177       self.box.add(self.exit_button)
 178       self.exit_button.show()
 179
 180     elif self.gui == 'task':
 181       # label
 182       self.label = gtk.Label( self.gui_message )
 183       self.label.set_line_wrap(True)
 184       self.box.pack_start(self.label, True, True, 0)
 185       self.label.show()
 186
 187       # progress bar
 188       self.progressbar = gtk.ProgressBar(adjustment=None)
 189       self.progressbar.set_orientation(gtk.PROGRESS_LEFT_TO_RIGHT)
 190       self.progressbar.set_pulse_step(0.01)
 191       self.box.pack_start(self.progressbar, True, True, 0)
 192
 193       # button box
 194       self.button_box = gtk.HButtonBox()
 195       self.button_box.set_layout(gtk.BUTTONBOX_SPREAD)
 196       self.box.pack_start(self.button_box, True, True, 0)
 197       self.button_box.show()
 198
 199       # start button
 200       start_image = gtk.Image()
 201       start_image.set_from_stock(gtk.STOCK_APPLY, gtk.ICON_SIZE_BUTTON)
 202       self.start_button = gtk.Button("Start")
 203       self.start_button.set_image(start_image)
 204       self.start_button.connect("clicked", self.start, None)
 205       self.button_box.add(self.start_button)
 206       if not self.gui_autostart:
 207         self.start_button.show()
 208
 209       # exit button
 210       exit_image = gtk.Image()
 211       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 212       self.exit_button = gtk.Button("Exit")
 213       self.exit_button.set_image(exit_image)
 214       self.exit_button.connect("clicked", self.destroy, None)
 215       self.button_box.add(self.exit_button)
 216       self.exit_button.show()
 217
 218     self.box.show()
 219     self.window.show()
 220
 221     if self.gui_autostart:
 222       self.start(None)
 223
 224   # start button clicked, begin tasks
 225   def start(self, widget, data=None):
 226     # disable the start button
 227     self.start_button.set_sensitive(False)
 228
 229     # start running tasks
 230     self.gui_task_i = 0
 231     self.run_task()
 232
 233   # run the next task in the task list
 234   def run_task(self):
 235     if self.gui_task_i >= len(self.gui_tasks):
 236       self.destroy(False)
 237       return
 238
 239     task = self.gui_tasks[self.gui_task_i]
 240
 241     # get ready for the next task
 242     self.gui_task_i += 1
 243
 244     if task == 'download_tarball':
 245       print 'Downloading '+self.paths['url']['tarball']
 246       self.download('tarball', self.paths['url']['tarball'], self.paths['file']['tarball'])
 247
 248     elif task == 'download_tarball_sig':
 249       print 'Downloading '+self.paths['url']['tarball_sig']
 250       self.download('signature', self.paths['url']['tarball_sig'], self.paths['file']['tarball_sig'])
 251
 252     elif task == 'verify':
 253       print 'Verifying signature'
 254       self.verify()
 255
 256     elif task == 'extract':
 257       print 'Extracting '+self.paths['filename']['tarball']
 258       self.extract()
 259
 260     elif task == 'run':
 261       print 'Running '+self.paths['file']['start']
 262       self.run()
 263
 264     elif task == 'start_over':
 265       print 'Starting download over again'
 266       self.start_over()
 267
 268
 269   def download(self, name, url, path):
 270     # initialize the progress bar
 271     self.progressbar.set_fraction(0)
 272     self.progressbar.set_text('Downloading '+name)
 273     self.progressbar.show()
 274     self.refresh_gtk()
 275
 276     # start the download
 277     self.dl_response = urllib2.urlopen(url)
 278     self.dl_total_size = self.dl_response.info().getheader('Content-Length').strip()
 279     self.dl_total_size = int(self.dl_total_size)
 280     self.dl_bytes_so_far = 0
 281
 282     # set a timer to download more chunks
 283     self.timer = gobject.timeout_add(1, self.download_chunk, name)
 284
 285     # open a file to write to
 286     self.file_download = open(path, 'w')
 287
 288   def download_chunk(self, name):
 289     # download 10kb a time
 290     chunk = self.dl_response.read(10240)
 291     self.dl_bytes_so_far += len(chunk)
 292     self.file_download.write(chunk)
 293
 294     if not chunk:
 295       self.file_download.close()
 296       # next task!
 297       self.run_task()
 298       return False
 299
 300     percent = float(self.dl_bytes_so_far) / self.dl_total_size
 301     self.progressbar.set_fraction(percent)
 302     percent = round(percent*100, 2)
 303     self.progressbar.set_text("Downloaded %d%% of %s" % (percent, name))
 304     self.refresh_gtk()
 305
 306     sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" % (self.dl_bytes_so_far, self.dl_total_size, percent))
 307
 308     if self.dl_bytes_so_far >= self.dl_total_size:
 309       sys.stdout.write('\n')
 310
 311     return True
 312
 313   def verify(self):
 314     # initialize the progress bar
 315     self.progressbar.set_fraction(0)
 316     self.progressbar.set_text('Verifying Signature')
 317     self.progressbar.show()
 318
 319     p = subprocess.Popen([self.paths['file']['verify'], self.paths['dir']['gpg'], self.paths['file']['tarball_sig']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 320     self.pulse_until_process_exits(p)
 321
 322     output = p.stdout.read()
 323
 324     if 'Good signature' in output:
 325       self.run_task()
 326     else:
 327       self.progressbar.hide()
 328       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.")
 329       self.gui_tasks = ['start_over']
 330       self.gui_task_i = 0
 331       self.start_button.show()
 332       self.start_button.set_sensitive(True)
 333
 334   def extract(self):
 335     # initialize the progress bar
 336     self.progressbar.set_fraction(0)
 337     self.progressbar.set_text('Installing')
 338     self.progressbar.show()
 339
 340     p = subprocess.Popen(['tar', '-xf', self.paths['file']['tarball'], '-C', self.paths['dir']['tbb']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 341     self.pulse_until_process_exits(p)
 342
 343     self.run_task()
 344
 345   def run(self, run_next_task = True):
 346     subprocess.Popen([self.paths['file']['start']])
 347     if run_next_task:
 348       self.run_task()
 349
 350   # make the progress bar pulse until process p (a Popen object) finishes
 351   def pulse_until_process_exits(self, p):
 352     while p.poll() == None:
 353       time.sleep(0.01)
 354       self.progressbar.pulse()
 355       self.refresh_gtk()
 356
 357   # start over and download TBB again
 358   def start_over(self):
 359     self.label.set_text("Downloading Tor Browser Bundle over again.")
 360     self.gui_tasks = ['download_tarball', 'download_tarball_sig', 'verify', 'extract', 'run']
 361     self.gui_task_i = 0
 362     self.start(None)
 363
 364   # refresh gtk
 365   def refresh_gtk(self):
 366     while gtk.events_pending():
 367        gtk.main_iteration(False)
 368
 369   # exit
 370   def delete_event(self, widget, event, data=None):
 371     return False
 372   def destroy(self, widget, data=None):
 373     if self.timer:
 374       gobject.source_remove(self.timer)
 375     self.timer = False
 376
 377     gtk.main_quit()
 378
 379 if __name__ == "__main__":
 380   current_tbl_version = '0.1'
 381   current_tbb_version = '2.3.25-2'
 382
 383   print 'Tor Browser Launcher'
 384   print 'version %s' % (current_tbl_version)
 385   print 'https://github.com/micahflee/torbrowser-launcher'
 386
 387   app = TorBrowserLauncher(current_tbb_version)
 388