Fix many* python scripts in src/

Make sure that:
- shebang is only present for executable files
- shebang is #!/usr/bin/env python
- __main__ is only present for executable files
- file's executable bit is coherent

Also fix EOF LF to be only one.

* Do not fix them all at once otherwise the CL would be too large.

TBR=jamiewalch@chromium.org
BUG=105108
TEST=

Review URL: http://codereview.chromium.org/8665013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@111427 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 183 insertions, 160 deletions

diff --git a/remoting/tools/gettoken.py b/remoting/tools/gettoken.py
index a36408b..4f867bf 100755
--- a/remoting/tools/gettoken.py
+++ b/remoting/tools/gettoken.py
@@ -1,11 +1,12 @@
 #!/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.
-#
-# gettoken.py can be used to get auth token from Gaia. It asks username and
-# password and then prints token on the screen.
+
+"""Get auth token from Gaia.
+
+It asks username and password and then prints token on the screen.
+"""
 
 import getpass
 import os
@@ -13,46 +14,53 @@ import urllib
 
 import gaia_auth
 
-chromoting_auth_filepath = os.path.join(os.path.expanduser('~'),
-                                        '.chromotingAuthToken')
-chromoting_dir_auth_filepath = os.path.join(os.path.expanduser('~'),
-                                            '.chromotingDirectoryAuthToken')
-
-print "Email:",
-email = raw_input()
-
-passwd = getpass.getpass("Password: ")
-
-chromoting_authenticator = gaia_auth.GaiaAuthenticator('chromiumsync');
-chromoting_auth_token = chromoting_authenticator.authenticate(email, passwd)
-
-chromoting_dir_authenticator = gaia_auth.GaiaAuthenticator('chromoting');
-chromoting_dir_auth_token = \
-    chromoting_dir_authenticator.authenticate(email, passwd)
-
-# Set permission mask for created files.
-os.umask(0066)
-
-chromoting_auth_file = open(chromoting_auth_filepath, 'w')
-chromoting_auth_file.write(email)
-chromoting_auth_file.write('\n')
-chromoting_auth_file.write(chromoting_auth_token)
-chromoting_auth_file.close()
-
-print
-print 'Chromoting (sync) Auth Token:'
-print
-print chromoting_auth_token
-print '...saved in', chromoting_auth_filepath
-
-chromoting_dir_auth_file = open(chromoting_dir_auth_filepath, 'w')
-chromoting_dir_auth_file.write(email)
-chromoting_dir_auth_file.write('\n')
-chromoting_dir_auth_file.write(chromoting_dir_auth_token)
-chromoting_dir_auth_file.close()
-
-print
-print 'Chromoting Directory Auth Token:'
-print
-print chromoting_dir_auth_token
-print '...saved in', chromoting_dir_auth_filepath
+
+def main():
+  basepath = os.path.expanduser('~')
+  chromoting_auth_filepath = os.path.join(basepath, '.chromotingAuthToken')
+  chromoting_dir_auth_filepath = os.path.join(
+      basepath, '.chromotingDirectoryAuthToken')
+
+  print "Email:",
+  email = raw_input()
+
+  passwd = getpass.getpass("Password: ")
+
+  chromoting_authenticator = gaia_auth.GaiaAuthenticator('chromiumsync');
+  chromoting_auth_token = chromoting_authenticator.authenticate(email, passwd)
+
+  chromoting_dir_authenticator = gaia_auth.GaiaAuthenticator('chromoting');
+  chromoting_dir_auth_token = chromoting_dir_authenticator.authenticate(
+      email, passwd)
+
+  # Set permission mask for created files.
+  os.umask(0066)
+
+  chromoting_auth_file = open(chromoting_auth_filepath, 'w')
+  chromoting_auth_file.write(email)
+  chromoting_auth_file.write('\n')
+  chromoting_auth_file.write(chromoting_auth_token)
+  chromoting_auth_file.close()
+
+  print
+  print 'Chromoting (sync) Auth Token:'
+  print
+  print chromoting_auth_token
+  print '...saved in', chromoting_auth_filepath
+
+  chromoting_dir_auth_file = open(chromoting_dir_auth_filepath, 'w')
+  chromoting_dir_auth_file.write(email)
+  chromoting_dir_auth_file.write('\n')
+  chromoting_dir_auth_file.write(chromoting_dir_auth_token)
+  chromoting_dir_auth_file.close()
+
+  print
+  print 'Chromoting Directory Auth Token:'
+  print
+  print chromoting_dir_auth_token
+  print '...saved in', chromoting_dir_auth_filepath
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())
diff --git a/remoting/tools/register_host.py b/remoting/tools/register_host.py
index ffdb955..6530d0e 100755
--- a/remoting/tools/register_host.py
+++ b/remoting/tools/register_host.py
@@ -1,11 +1,12 @@
 #!/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
@@ -22,67 +23,74 @@ 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')
-
-print "Email:",
-email = raw_input()
-password = getpass.getpass("Password: ")
-
-chromoting_auth = gaia_auth.GaiaAuthenticator('chromoting')
-auth_token = chromoting_auth.authenticate(email, password)
-
-host_id = random_uuid()
-print "HostId:", host_id
-host_name = socket.gethostname()
-print "HostName:", host_name
-
-print "Generating RSA key pair...",
-(private_key, public_key) = keygen.generateRSAKeyPair()
-print "Done"
-
-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)
-
-opener = urllib2.OpenerDirector()
-opener.add_handler(urllib2.HTTPDefaultErrorHandler())
-
-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)
-
-print "Done"
-
-# Get token that the host will use to athenticate in talk network.
-authenticator = gaia_auth.GaiaAuthenticator('chromiumsync');
-auth_token = authenticator.authenticate(email, password)
-
-# 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
+
+def main():
+  server = 'www.googleapis.com'
+  url = 'https://' + server + '/chromoting/v1/@me/hosts'
+
+  settings_filepath = os.path.join(os.path.expanduser('~'),
+                                  '.ChromotingConfig.json')
+
+  print "Email:",
+  email = raw_input()
+  password = getpass.getpass("Password: ")
+
+  chromoting_auth = gaia_auth.GaiaAuthenticator('chromoting')
+  auth_token = chromoting_auth.authenticate(email, password)
+
+  host_id = random_uuid()
+  print "HostId:", host_id
+  host_name = socket.gethostname()
+  print "HostName:", host_name
+
+  print "Generating RSA key pair...",
+  (private_key, public_key) = keygen.generateRSAKeyPair()
+  print "Done"
+
+  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)
+
+  opener = urllib2.OpenerDirector()
+  opener.add_handler(urllib2.HTTPDefaultErrorHandler())
+
+  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
+
+  print "Done"
+
+  # Get token that the host will use to athenticate in talk network.
+  authenticator = gaia_auth.GaiaAuthenticator('chromiumsync');
+  auth_token = authenticator.authenticate(email, password)
+
+  # 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())
diff --git a/remoting/tools/runclient.py b/remoting/tools/runclient.py
index 12a4c5f..76e1af2 100755
--- a/remoting/tools/runclient.py
+++ b/remoting/tools/runclient.py
@@ -1,49 +1,56 @@
 #!/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.
-#
-# runclient.py gets the chromoting host info from an input arg and then
-# tries to find the authentication info in the .chromotingAuthToken file
-# so that the host authentication arguments can be automatically set.
+
+"""Gets the chromoting host info from an input arg and then
+tries to find the authentication info in the .chromotingAuthToken file
+so that the host authentication arguments can be automatically set.
+"""
 
 import os
 import platform
-
-auth_filepath = os.path.join(os.path.expanduser('~'), '.chromotingAuthToken')
-script_path = os.path.dirname(__file__)
-
-if platform.system() == "Windows":
-  # TODO(garykac): Make this work on Windows.
-  print 'Not yet supported on Windows.'
-  exit(1)
-elif platform.system() == "Darwin": # Darwin == MacOSX
-  client_path = '../../xcodebuild/Debug/chromoting_simple_client'
-else:
-  client_path = '../../out/Debug/chromoting_x11_client'
-
-client_path = os.path.join(script_path, client_path)
-
-# Read username and auth token from token file.
-auth = open(auth_filepath)
-authinfo = auth.readlines()
-
-username = authinfo[0].rstrip()
-authtoken = authinfo[1].rstrip()
-
-# Request final 8 characters of Host JID from user.
-# This assumes that the host is published under the same username as the
-# client attempting to connect.
-print 'Host JID:', username + '/chromoting',
-hostjid_suffix = raw_input()
-hostjid = username + '/chromoting' + hostjid_suffix.upper()
-
-command = []
-command.append(client_path)
-command.append('--host_jid ' + hostjid)
-command.append('--jid ' + username)
-command.append('--token ' + authtoken)
-
-# Launch the client
-os.system(' '.join(command))
+import sys
+
+def main():
+  auth_filepath = os.path.join(os.path.expanduser('~'), '.chromotingAuthToken')
+  script_path = os.path.dirname(__file__)
+
+  if platform.system() == "Windows":
+    # TODO(garykac): Make this work on Windows.
+    print 'Not yet supported on Windows.'
+    return 1
+  elif platform.system() == "Darwin": # Darwin == MacOSX
+    client_path = '../../xcodebuild/Debug/chromoting_simple_client'
+  else:
+    client_path = '../../out/Debug/chromoting_x11_client'
+
+  client_path = os.path.join(script_path, client_path)
+
+  # Read username and auth token from token file.
+  auth = open(auth_filepath)
+  authinfo = auth.readlines()
+
+  username = authinfo[0].rstrip()
+  authtoken = authinfo[1].rstrip()
+
+  # Request final 8 characters of Host JID from user.
+  # This assumes that the host is published under the same username as the
+  # client attempting to connect.
+  print 'Host JID:', username + '/chromoting',
+  hostjid_suffix = raw_input()
+  hostjid = username + '/chromoting' + hostjid_suffix.upper()
+
+  command = []
+  command.append(client_path)
+  command.append('--host_jid ' + hostjid)
+  command.append('--jid ' + username)
+  command.append('--token ' + authtoken)
+
+  # Launch the client
+  os.system(' '.join(command))
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())