wrote code to figure out which language out of available languages to use, and creates local ~/.torbrowser directory structure

torbrowser-launcher

@@ -15,7 +15,10 @@ class Base:
   def destroy(self, widget, data=None):
     gtk.main_quit()
 
-  def __init__(self):
+  def __init__(self, tbb_version, tarball_url):
+    self.version = tbb_version
+    self.tarball_url = tarball_url
+
     self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
     self.window.set_title("Tor Browser Launcher - First Run")
     self.window.set_border_width(10)
@@ -26,7 +29,7 @@ class Base:
     self.box = gtk.VBox(False, 20)
     self.window.add(self.box)
 
-    self.label = gtk.Label("The first time you run the Tor Browser Launcher you need to download the Tor Browser Bundle from https://www.torproject.org/. Would you like to do that now?")
+    self.label = gtk.Label("The first time you run the Tor Browser Launcher you need to download the Tor Browser Bundle. Would you like to download it from the following URL now?\n\n"+self.tarball_url)
     self.label.set_line_wrap(True)
     self.box.pack_start(self.label, True, True, 0)
     self.label.show()
@@ -52,14 +55,45 @@ class Base:
     gtk.main()
 
 if __name__ == "__main__":
-  # figure out the language and architecture
-  language = locale.getdefaultlocale()[0].split('_')[0]
+  # current TBB version
+  tbb_version = '2.3.25-2'
+
+  # figure out the architecture
   architecture = subprocess.check_output(['arch']).strip('\n')
 
-  # todo: is TBB already installed?
-  # if yes, launch it
-  # if no, show first run dialog
+  # figure out the language
+  available_languages = ['en-US', 'ar', 'de', 'es-ES', 'fa', 'fr', 'it', 'ko', 'nl', 'pl', 'pt-PT', 'ru', 'vi', 'zh-CN']
+  language = locale.getdefaultlocale()[0].replace('_', '-')
+  if language not in available_languages:
+    language = language.split('-')[0]
+    if language not in available_languages:
+      for l in available_languages:
+        if l[0:2] == language:
+          language = l
+  # if language isn't available, default to english
+  if language not in available_languages:
+    language = 'en-US'
+
+  # make sure local directory structure is setup
+  data_dir = os.getenv('HOME')+'/.torbrowser'
+  download_dir = data_dir+'/download'
+  tbb_dir = data_dir+'/tbb/'+architecture+'/'+language
+  if os.path.exists(download_dir) == False:
+    print 'making '+download_dir
+    os.makedirs(download_dir)
+  if os.path.exists(tbb_dir) == False:
+    print 'making '+tbb_dir
+    os.makedirs(tbb_dir)
+
+  # is TBB already installed?
+  tbb_start = tbb_dir+'/start-tor-browser'
+  if os.path.isfile(tbb_start):
+    print 'Launching '+tbb_start
+    subprocess.call([tbb_start])
+
+  else:
+    print 'Starting downloader'
+    tarball_url = 'https://www.torproject.org/dist/torbrowser/linux/tor-browser-gnu-linux-'+architecture+'-'+tbb_version+'-dev-'+language+'.tar.gz'
+    base = Base(tbb_version, tarball_url)
+    base.main()
 
-  # first run dialog
-  base = Base()
-  base.main()