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