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         'tarball': 'http://localhost/'+tarball_filename,
 116         'tarball_sig': 'http://localhost/'+tarball_filename+'.asc'
 117       },
 118       'filename': {
 119         'tarball': tarball_filename,
 120         'tarball_sig': tarball_filename+'.asc'
 121       }
 122     }
 123
 124   # create directories that don't exist
 125   def mkdirs(self):
 126     if os.path.exists(self.paths['dir']['download']) == False:
 127       os.makedirs(self.paths['dir']['download'])
 128     if os.path.exists(self.paths['dir']['tbb']) == False:
 129       os.makedirs(self.paths['dir']['tbb'])
 130
 131   # there are different GUIs that might appear, this sets which one we want
 132   def set_gui(self, gui, message, tasks, autostart=True):
 133     self.gui = gui
 134     self.gui_message = message
 135     self.gui_tasks = tasks
 136     self.gui_autostart = autostart
 137
 138   # build the application's UI
 139   def build_ui(self):
 140     self.timer = False
 141
 142     # allow buttons to have icons
 143     try:
 144       settings = gtk.settings_get_default()
 145       settings.props.gtk_button_images = True
 146     except:
 147       pass
 148
 149     # set up the window
 150     self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
 151     self.window.set_title("Tor Browser")
 152     self.window.set_position(gtk.WIN_POS_CENTER)
 153     self.window.set_border_width(10)
 154     self.window.connect("delete_event", self.delete_event)
 155     self.window.connect("destroy", self.destroy)
 156
 157     self.box = gtk.VBox(False, 20)
 158     self.window.add(self.box)
 159
 160     if self.gui == 'error':
 161       # labels
 162       self.label1 = gtk.Label( self.gui_message )
 163       self.label1.set_line_wrap(True)
 164       self.box.pack_start(self.label1, True, True, 0)
 165       self.label1.show()
 166
 167       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.")
 168       self.label2.set_line_wrap(True)
 169       self.box.pack_start(self.label2, True, True, 0)
 170       self.label2.show()
 171
 172       # exit button
 173       exit_image = gtk.Image()
 174       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 175       self.exit_button = gtk.Button("Exit")
 176       self.exit_button.set_image(exit_image)
 177       self.exit_button.connect("clicked", self.destroy, None)
 178       self.box.add(self.exit_button)
 179       self.exit_button.show()
 180
 181     elif self.gui == 'task':
 182       # label
 183       self.label = gtk.Label( self.gui_message )
 184       self.label.set_line_wrap(True)
 185       self.box.pack_start(self.label, True, True, 0)
 186       self.label.show()
 187
 188       # progress bar
 189       self.progressbar = gtk.ProgressBar(adjustment=None)
 190       self.progressbar.set_orientation(gtk.PROGRESS_LEFT_TO_RIGHT)
 191       self.progressbar.set_pulse_step(0.01)
 192       self.box.pack_start(self.progressbar, True, True, 0)
 193
 194       # button box
 195       self.button_box = gtk.HButtonBox()
 196       self.button_box.set_layout(gtk.BUTTONBOX_SPREAD)
 197       self.box.pack_start(self.button_box, True, True, 0)
 198       self.button_box.show()
 199
 200       # start button
 201       start_image = gtk.Image()
 202       start_image.set_from_stock(gtk.STOCK_APPLY, gtk.ICON_SIZE_BUTTON)
 203       self.start_button = gtk.Button("Start")
 204       self.start_button.set_image(start_image)
 205       self.start_button.connect("clicked", self.start, None)
 206       self.button_box.add(self.start_button)
 207       if not self.gui_autostart:
 208         self.start_button.show()
 209
 210       # exit button
 211       exit_image = gtk.Image()
 212       exit_image.set_from_stock(gtk.STOCK_CANCEL, gtk.ICON_SIZE_BUTTON)
 213       self.exit_button = gtk.Button("Exit")
 214       self.exit_button.set_image(exit_image)
 215       self.exit_button.connect("clicked", self.destroy, None)
 216       self.button_box.add(self.exit_button)
 217       self.exit_button.show()
 218
 219     self.box.show()
 220     self.window.show()
 221
 222     if self.gui_autostart:
 223       self.start(None)
 224
 225   # start button clicked, begin tasks
 226   def start(self, widget, data=None):
 227     # disable the start button
 228     self.start_button.set_sensitive(False)
 229
 230     # start running tasks
 231     self.gui_task_i = 0
 232     self.run_task()
 233
 234   # run the next task in the task list
 235   def run_task(self):
 236     if self.gui_task_i >= len(self.gui_tasks):
 237       self.destroy(False)
 238       return
 239
 240     task = self.gui_tasks[self.gui_task_i]
 241
 242     # get ready for the next task
 243     self.gui_task_i += 1
 244
 245     if task == 'download_tarball':
 246       print 'Downloading '+self.paths['url']['tarball']
 247       self.download('tarball', self.paths['url']['tarball'], self.paths['file']['tarball'])
 248
 249     elif task == 'download_tarball_sig':
 250       print 'Downloading '+self.paths['url']['tarball_sig']
 251       self.download('signature', self.paths['url']['tarball_sig'], self.paths['file']['tarball_sig'])
 252
 253     elif task == 'verify':
 254       print 'Verifying signature'
 255       self.verify()
 256
 257     elif task == 'extract':
 258       print 'Extracting '+self.paths['filename']['tarball']
 259       self.extract()
 260
 261     elif task == 'run':
 262       print 'Running '+self.paths['file']['start']
 263       self.run()
 264
 265     elif task == 'start_over':
 266       print 'Starting download over again'
 267       self.start_over()
 268
 269
 270   def download(self, name, url, path):
 271     # initialize the progress bar
 272     self.progressbar.set_fraction(0)
 273     self.progressbar.set_text('Downloading '+name)
 274     self.progressbar.show()
 275     self.refresh_gtk()
 276
 277     # start the download
 278     self.dl_response = urllib2.urlopen(url)
 279     self.dl_total_size = self.dl_response.info().getheader('Content-Length').strip()
 280     self.dl_total_size = int(self.dl_total_size)
 281     self.dl_bytes_so_far = 0
 282
 283     # set a timer to download more chunks
 284     self.timer = gobject.timeout_add(1, self.download_chunk, name)
 285
 286     # open a file to write to
 287     self.file_download = open(path, 'w')
 288
 289   def download_chunk(self, name):
 290     # download 10kb a time
 291     chunk = self.dl_response.read(10240)
 292     self.dl_bytes_so_far += len(chunk)
 293     self.file_download.write(chunk)
 294
 295     if not chunk:
 296       self.file_download.close()
 297       # next task!
 298       self.run_task()
 299       return False
 300
 301     percent = float(self.dl_bytes_so_far) / self.dl_total_size
 302     self.progressbar.set_fraction(percent)
 303     percent = round(percent*100, 2)
 304     self.progressbar.set_text("Downloaded %d%% of %s" % (percent, name))
 305     self.refresh_gtk()
 306
 307     sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" % (self.dl_bytes_so_far, self.dl_total_size, percent))
 308
 309     if self.dl_bytes_so_far >= self.dl_total_size:
 310       sys.stdout.write('\n')
 311
 312     return True
 313
 314   def verify(self):
 315     # initialize the progress bar
 316     self.progressbar.set_fraction(0)
 317     self.progressbar.set_text('Verifying Signature')
 318     self.progressbar.show()
 319
 320     p = subprocess.Popen([self.paths['file']['verify'], self.paths['dir']['gpg'], self.paths['file']['tarball_sig']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 321     self.pulse_until_process_exits(p)
 322
 323     output = p.stdout.read()
 324
 325     if 'Good signature' in output:
 326       self.run_task()
 327     else:
 328       self.progressbar.hide()
 329       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.")
 330       self.gui_tasks = ['start_over']
 331       self.gui_task_i = 0
 332       self.start_button.show()
 333       self.start_button.set_sensitive(True)
 334
 335   def extract(self):
 336     # initialize the progress bar
 337     self.progressbar.set_fraction(0)
 338     self.progressbar.set_text('Installing')
 339     self.progressbar.show()
 340
 341     p = subprocess.Popen(['tar', '-xf', self.paths['file']['tarball'], '-C', self.paths['dir']['tbb']], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 342     self.pulse_until_process_exits(p)
 343
 344     self.run_task()
 345
 346   def run(self, run_next_task = True):
 347     subprocess.Popen([self.paths['file']['start']])
 348     if run_next_task:
 349       self.run_task()
 350
 351   # make the progress bar pulse until process p (a Popen object) finishes
 352   def pulse_until_process_exits(self, p):
 353     while p.poll() == None:
 354       time.sleep(0.01)
 355       self.progressbar.pulse()
 356       self.refresh_gtk()
 357
 358   # start over and download TBB again
 359   def start_over(self):
 360     self.label.set_text("Downloading Tor Browser Bundle over again.")
 361     self.gui_tasks = ['download_tarball', 'download_tarball_sig', 'verify', 'extract', 'run']
 362     self.gui_task_i = 0
 363     self.start(None)
 364
 365   # refresh gtk
 366   def refresh_gtk(self):
 367     while gtk.events_pending():
 368        gtk.main_iteration(False)
 369
 370   # exit
 371   def delete_event(self, widget, event, data=None):
 372     return False
 373   def destroy(self, widget, data=None):
 374     if self.timer:
 375       gobject.source_remove(self.timer)
 376     self.timer = False
 377
 378     gtk.main_quit()
 379
 380 if __name__ == "__main__":
 381   current_tbl_version = '0.1'
 382   current_tbb_version = '2.3.25-2'
 383
 384   print 'Tor Browser Launcher'
 385   print 'version %s' % (current_tbl_version)
 386   print 'https://github.com/micahflee/torbrowser-launcher'
 387
 388   app = TorBrowserLauncher(current_tbb_version)
 389