Fix many* python scripts in src/

remoting/tools/register_host.py

 #!/usr/bin/env python
-#
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-#
-# register_host.py registers new hosts in chromoting directory. It
-# asks for username/password and then writes these settings to config file.
+
+"""Registers new hosts in chromoting directory.
+
+It asks for username/password and then writes these settings to config file.
+"""
 
 import getpass
 import os
 import urllib
 import urllib2
 import random
 import socket
 import sys
 
 import gaia_auth
 import keygen
 
 def random_uuid():
   return ("%04x%04x-%04x-%04x-%04x-%04x%04x%04x" %
     tuple(map(lambda x: random.randrange(0,65536), range(8))))
 
-server = 'www.googleapis.com'
-url = 'https://' + server + '/chromoting/v1/@me/hosts'
 
-settings_filepath = os.path.join(os.path.expanduser('~'),
-                                 '.ChromotingConfig.json')
+def main():
+  server = 'www.googleapis.com'
+  url = 'https://' + server + '/chromoting/v1/@me/hosts'
 
-print "Email:",
-email = raw_input()
-password = getpass.getpass("Password: ")
+  settings_filepath = os.path.join(os.path.expanduser('~'),
+                                  '.ChromotingConfig.json')
 
-chromoting_auth = gaia_auth.GaiaAuthenticator('chromoting')
-auth_token = chromoting_auth.authenticate(email, password)
+  print "Email:",
+  email = raw_input()
+  password = getpass.getpass("Password: ")
 
-host_id = random_uuid()
-print "HostId:", host_id
-host_name = socket.gethostname()
-print "HostName:", host_name
+  chromoting_auth = gaia_auth.GaiaAuthenticator('chromoting')
+  auth_token = chromoting_auth.authenticate(email, password)
 
-print "Generating RSA key pair...",
-(private_key, public_key) = keygen.generateRSAKeyPair()
-print "Done"
+  host_id = random_uuid()
+  print "HostId:", host_id
+  host_name = socket.gethostname()
+  print "HostName:", host_name
 
-params = ('{"data":{' + \
-          '"hostId": "%(hostId)s",' + \
-          '"hostName": "%(hostName)s",' + \
-          '"publicKey": "%(publicKey)s"}}') % \
-          {'hostId': host_id, 'hostName': host_name,
-           'publicKey': public_key}
-headers = {"Authorization": "GoogleLogin auth=" + auth_token,
-           "Content-Type": "application/json" }
-request = urllib2.Request(url, params, headers)
+  print "Generating RSA key pair...",
+  (private_key, public_key) = keygen.generateRSAKeyPair()
+  print "Done"
 
-opener = urllib2.OpenerDirector()
-opener.add_handler(urllib2.HTTPDefaultErrorHandler())
+  params = ('{"data":{' +
+            '"hostId": "%(hostId)s",' +
+            '"hostName": "%(hostName)s",' +
+            '"publicKey": "%(publicKey)s"}}') %
+            {'hostId': host_id, 'hostName': host_name,
+            'publicKey': public_key}
+  headers = {"Authorization": "GoogleLogin auth=" + auth_token,
+            "Content-Type": "application/json" }
+  request = urllib2.Request(url, params, headers)
 
-print
-print "Registering host with directory service..."
-try:
-  res = urllib2.urlopen(request)
-  data = res.read()
-except urllib2.HTTPError, err:
-  print >> sys.stderr, "Directory returned error:", err
-  print >> sys.stderr, err.fp.read()
-  sys.exit(1)
+  opener = urllib2.OpenerDirector()
+  opener.add_handler(urllib2.HTTPDefaultErrorHandler())
 
-print "Done"
+  print
+  print "Registering host with directory service..."
+  try:
+    res = urllib2.urlopen(request)
+    data = res.read()
+  except urllib2.HTTPError, err:
+    print >> sys.stderr, "Directory returned error:", err
+    print >> sys.stderr, err.fp.read()
+    return 1
 
-# Get token that the host will use to athenticate in talk network.
-authenticator = gaia_auth.GaiaAuthenticator('chromiumsync');
-auth_token = authenticator.authenticate(email, password)
+  print "Done"
 
-# Write settings file.
-os.umask(0066) # Set permission mask for created file.
-settings_file = open(settings_filepath, 'w')
-settings_file.write('{\n');
-settings_file.write('  "xmpp_login" : "' + email + '",\n')
-settings_file.write('  "xmpp_auth_token" : "' + auth_token + '",\n')
-settings_file.write('  "host_id" : "' + host_id + '",\n')
-settings_file.write('  "host_name" : "' + host_name + '",\n')
-settings_file.write('  "private_key" : "' + private_key + '",\n')
-settings_file.write('}\n')
-settings_file.close()
+  # Get token that the host will use to athenticate in talk network.
+  authenticator = gaia_auth.GaiaAuthenticator('chromiumsync');
+  auth_token = authenticator.authenticate(email, password)
 
-print 'Configuration saved in', settings_filepath
+  # Write settings file.
+  os.umask(0066) # Set permission mask for created file.
+  settings_file = open(settings_filepath, 'w')
+  settings_file.write('{\n');
+  settings_file.write('  "xmpp_login" : "' + email + '",\n')
+  settings_file.write('  "xmpp_auth_token" : "' + auth_token + '",\n')
+  settings_file.write('  "host_id" : "' + host_id + '",\n')
+  settings_file.write('  "host_name" : "' + host_name + '",\n')
+  settings_file.write('  "private_key" : "' + private_key + '",\n')
+  settings_file.write('}\n')
+  settings_file.close()
+
+  print 'Configuration saved in', settings_filepath
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())