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