Initial Commit

CHANGES.txt

+Changes
+========
+
+
+0.1.1 (2015-06-11)
+---------------------
+
+ * Added sha256 verification. [Rafael Monnerat]
+
+0.1.0 (2015-06-10)
+---------------------
+
+ * Initial Release of slapcache. [Rafael Monnerat]
+

MANIFEST.in

+include README.txt
+include CHANGES.txt
+include slapcache/template/*

setup.py

+from setuptools import setup, find_packages
+
+version = '0.1.1'
+name = 'slapcache'
+long_description = open("README.txt").read() + "\n" + \
+    open("CHANGES.txt").read() + "\n"
+
+setup(name=name,
+      version=version,
+      description="SlapOS Cache Utils",
+      long_description=long_description,
+      classifiers=[
+          "Programming Language :: Python",
+      ],
+      keywords='slapos shacache',
+      license='GPLv3',
+      url='http://www.slapos.org',
+      author='VIFIB',
+      namespace_packages=['slapcache'],
+      packages=find_packages(),
+      include_package_data=True,
+      install_requires=[
+          'slapos.libnetworkcache>=0.14.1',
+          'iniparse',
+      ],
+      zip_safe=False,
+      entry_points={
+          'console_scripts': [
+              # Those entry points are development version and
+              # self updatable API
+              'slapcache-upload = slapcache.upload:main',
+              'slapcache-conf = slapcache.conf:do_conf',
+              'slapcache-download = slapcache.download:main',
+          ],
+      },
+      test_suite="slapcache.test",
+)

slapcache/conf.py

+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2012-2014 Vifib SARL and Contributors.
+# All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly advised to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import datetime
+import shutil
+import logging
+from optparse import OptionParser, Option
+from time import time
+import sys
+from signature import Config
+import os
+
+class Parser(OptionParser):
+  """
+  Parse all arguments.
+  """
+  def __init__(self, usage=None, version=None):
+    """
+    Initialize all options possibles.
+    """
+    OptionParser.__init__(self, usage=usage, version=version,
+                      option_list=[
+        Option("--slapos-configuration",
+               default='/etc/opt/slapcache.cfg',
+               help="Path to slapos configuration file"),
+        Option("--key",
+               default="slapos-global-key",
+               help="Upgrade Key for configuration file"),
+        Option("--force",
+               default=False,
+               action="store_true",
+               help="Overwrite configuration file"),
+        ])
+
+  def check_args(self):
+    """
+    Check arguments
+    """
+    (options, args) = self.parse_args()
+    return options
+
+def get_template(name):
+ 
+  fd = open('/'.join(__file__.split('/')[:-1]) + '/template/%s' % name, "r")
+  try:
+    content = fd.read()
+  finally:
+    fd.close()
+
+  return content
+
+import os, errno
+
+def mkdir_p(path):
+  if not os.path.exists(path):
+    os.makedirs(path)
+  
+def create(path, text=None, mode=0666):
+  fd = os.open(path, os.O_CREAT | os.O_WRONLY | os.O_TRUNC, mode)
+  try:
+    os.write(fd, text)
+  finally:
+    os.close(fd)
+
+def do_conf():
+  """Generate Default Configuration file """
+  usage = "usage: %s [options] " % sys.argv[0]
+  run_config(Config(Parser(usage=usage).check_args()))
+  sys.exit()
+
+def run_config(config):
+  if not config.force and os.path.exists(config.slapos_configuration):
+    raise ValueError("%s already exists!" % config.slapos_configuration)
+
+  if os.path.exists(config.slapos_configuration):
+    shutil.move(config.slapos_configuration, 
+      config.slapos_configuration + ".old.%s" % time())
+
+  mkdir_p('/'.join(config.slapos_configuration.split('/')[:-1]))
+
+  configuration_content = get_template("update.cfg.in")
+  configuration_dict = {"key": config.key}
+  create(path=config.slapos_configuration, 
+         text=configuration_content % configuration_dict)
+

slapcache/download.py

+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2012-2014 Vifib SARL and Contributors.
+# All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly advised to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import ConfigParser
+import datetime
+from optparse import OptionParser, Option
+import sys
+
+from signature import Signature, Config
+
+class Parser(OptionParser):
+  """
+  Parse all arguments.
+  """
+  def __init__(self, usage=None, version=None):
+    """
+    Initialize all options possibles.
+    """
+    OptionParser.__init__(self, usage=usage, version=version,
+                      option_list=[
+        Option("--slapos-configuration",
+               default='/etc/opt/slapcache.cfg',
+               help="Configuration File used to upload the key."),
+        Option("--destination",
+               default='/etc/opt/slapcache',
+               help="File used as reference to upgrade."),
+        ])
+
+  def check_args(self):
+    """
+    Check arguments
+    """
+    (options, args) = self.parse_args()
+    return options
+
+def main():
+  """Upload file to update computer and slapos"""
+  usage = "usage: [options] "
+  # Parse arguments
+  config = Config(Parser(usage=usage).check_args())
+  Signature(config).download()
+  sys.exit()

slapcache/signature.py

+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2012-2014 Vifib SARL and Contributors.
+# All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly advised to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import ConfigParser
+import os
+import time
+import traceback
+import tempfile
+import datetime
+import shutil
+import hashlib
+import base64
+from random import choice
+from string import ascii_lowercase
+
+from slapos.networkcachehelper import NetworkcacheClient, \
+                                      helper_download_network_cached
+
+
+class NetworkCache:
+  def __init__(self, configuration_path):
+    if not os.path.exists(configuration_path):
+      raise ValueError("You need configuration file")
+    self.configuration = configuration_path
+    self._load()
+ 
+  def _load(self):
+    network_cache_info = ConfigParser.RawConfigParser()
+    network_cache_info.read(self.configuration)
+    network_cache_info_dict = dict(network_cache_info.items('networkcache'))
+    def get_(name):
+      return network_cache_info_dict.get(name)
+
+    self.download_binary_cache_url = get_('download-binary-cache-url')
+    self.download_cache_url = get_('download-cache-url')
+    self.download_binary_dir_url = get_('download-binary-dir-url')
+    self.signature_certificate_list = get_('signature-certificate-list')
+
+    # Not mandatory
+    self.dir_url = get_('upload-dir-url')
+    self.cache_url = get_('upload-cache-url')
+    self.signature_private_key_file = get_('signature_private_key_file')
+    self.shacache_cert_file = get_('shacache-cert-file')
+    self.shacache_key_file = get_('shacache-key-file')
+    self.shadir_cert_file = get_('shadir-cert-file')
+    self.shadir_key_file = get_('shadir-key-file')
+
+
+    if network_cache_info.has_section('shacache'):
+      self.directory_key = network_cache_info.get('shacache', 'key')
+    else:
+      self.directory_key = "slapos-upgrade-testing-key"
+
+  def upload(self, path, metadata_dict, is_sha256file=False):
+    """
+    Upload an existing file, using a file_descriptor.
+    """
+    if is_sha256file: 
+      key = self.directory_key + "-sha256-content"
+    else:
+      key = self.directory_key
+
+    file_descriptor = open(path, 'r')
+    if not (self.dir_url and self.cache_url):
+      raise ValueError("upload-dir-url and/or upload-cache-url is not defined")
+  
+    # backward compatibility
+    metadata_dict.setdefault('file', 'notused')
+    metadata_dict.setdefault('urlmd5', 'notused')
+  
+    # convert '' into None in order to call nc nicely
+    with NetworkcacheClient(self.cache_url, self.dir_url,
+          signature_private_key_file=self.signature_private_key_file or None,
+          shacache_cert_file=self.shacache_cert_file or None,
+          shacache_key_file=self.shacache_key_file or None,
+          shadir_cert_file=self.shadir_cert_file or None,
+          shadir_key_file=self.shadir_key_file or None,
+        ) as nc:
+      return nc.upload(file_descriptor, key, **metadata_dict)
+
+
+  def download(self, path, wanted_metadata_dict={}, 
+                 required_key_list=[], strategy=None, is_sha256file=False):
+
+    if is_sha256file:
+      key = self.directory_key + "-sha256-content"
+    else:
+      key = self.directory_key
+
+    result = helper_download_network_cached(
+              self.download_binary_dir_url, 
+              self.download_binary_cache_url,
+              self.signature_certificate_list,
+              key, wanted_metadata_dict, 
+              required_key_list, strategy)
+
+    if result:
+      # XXX check if nc filters signature_certificate_list!
+      # Creates a file with content to desired path.
+      file_descriptor, metadata_dict = result
+      f = open(path, 'w+b')
+      try:
+        shutil.copyfileobj(file_descriptor, f)
+        # XXX method should check MD5.
+        return metadata_dict
+      finally:
+        f.close()
+        file_descriptor.close()
+    return False
+
+
+
+def strategy(entry_list):
+  """Get the latest entry. """
+  timestamp = 0
+  best_entry = None
+  for entry in entry_list:
+    if entry['timestamp'] > timestamp:
+      best_entry = entry
+      timestamp = entry['timestamp']
+
+  return best_entry 
+
+class Signature:
+
+  def __init__(self, config, logger=None):
+    self.config = config
+    self.logger = logger
+
+  def log(self, message):
+    if self.logger is not None:
+      self.logger.debug(message)
+    else:
+      print message
+
+  def get_file_hash(self, path):
+    with open(path) as f:
+      h = hashlib.sha256()
+      h.update(f.read())
+      base = base64.b64encode(h.digest())
+    return base
+
+  def save_file_hash(self, path, destination):
+    base = self.get_file_hash(path) 
+    with open(destination, "w") as f:
+      f.write(base)
+
+  def _download(self, path):
+    """
+    Download a tar of the repository from cache, and untar it.
+    """
+    info, sha256path = tempfile.mkstemp()
+    shacache = NetworkCache(self.config.slapos_configuration)
+
+    if shacache.signature_certificate_list is None:
+      raise ValueError("You need at least one valid signature for download")
+
+    download_metadata_dict = shacache.download(path=path, 
+           required_key_list=['timestamp'], strategy=strategy)
+
+    if download_metadata_dict:
+      self.log('File downloaded on temp %s' % path)
+      current_sha256 = self.get_file_hash(path)
+      if shacache.download(path=sha256path, required_key_list=['timestamp'],
+                            strategy=strategy, is_sha256file=True):
+        self.log('File downloaded on temp. %s' % sha256path)
+        with open(sha256path) as f:
+          expected_sha256 = f.read()
+
+        if current_sha256 == expected_sha256:
+          return True
+        else:
+          raise ValueError("%s != %s" % (current_sha256, expected_sha256))
+  
+  def download(self):
+    """
+    Get status information and return its path
+    """
+    info, path = tempfile.mkstemp()
+    if not self._download(path) == False:
+      shutil.move(path, self.config.destination)
+    else:
+      raise ValueError("No result from shacache")
+
+  def _upload(self, path):
+    """
+    Creates uploads repository to cache.
+    """
+    shacache = NetworkCache(self.config.slapos_configuration)
+
+    sha256path = path + ".sha256"
+    self.save_file_hash(path, sha256path)
+ 
+    metadata_dict = {
+      # XXX: we set date from client side. It can be potentially dangerous
+      # as it can be badly configured.
+      'timestamp': time.time(),
+      'token': ''.join([choice(ascii_lowercase) for _ in range(128)]) 
+    }
+    try:
+      if shacache.upload(path=path,
+                         metadata_dict=metadata_dict):
+        self.log('Uploaded upload file to cache.')
+        if shacache.upload(path=sha256path, 
+                         metadata_dict=metadata_dict, is_sha256file=True):
+          self.log('Uploaded sha256file file to cache.')
+        else:
+          self.log('Fail to upload sha256file file to cache.')
+      else:
+        self.log('Fail to upload file to cache.')
+    except Exception:
+      self.log('Unable to upload to cache:\n%s.' % traceback.format_exc())
+      return
+
+  def upload(self):
+    self._upload(self.config.file)
+ 
+# Class containing all parameters needed for configuration
+class Config:
+  def __init__(self, option_dict=None):
+    if option_dict is not None:
+      # Set options parameters
+      for option, value in option_dict.__dict__.items():
+        setattr(self, option, value)
+

slapcache/template/update.cfg.in

+[shacache]
+key = %(key)s
+
+[networkcache]
+download-binary-cache-url = http://www.shacache.org/shacache
+download-cache-url = https://www.shacache.org/shacache
+download-binary-dir-url = http://www.shacache.org/shadir
+
+# Standard Signature handled by SlapOS Administrators
+signature-certificate-list =
+  -----BEGIN CERTIFICATE-----
+  MIIB8DCCAVmgAwIBAgIJAPFf61p8y809MA0GCSqGSIb3DQEBBQUAMBAxDjAMBgNV
+  BAMMBUNPTVAtMCAXDTE0MDIxNzE2NDgxN1oYDzIxMTQwMTI0MTY0ODE3WjAQMQ4w
+  DAYDVQQDDAVDT01QLTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAsiqCyuv1
+  HO9FmtwnMbEa1/u8Dn7T0k7hVKYXVQYof+59Ltbb3cA3nLjFSJDr/wQT6N89MccS
+  PneRzkWqZKL06Kmj+N+XJfRyVaTz1qQtNzjdbYkO6RgQq+fvq2CO0+PSnL6NttLU
+  /a9nQMcVm7wZ8kmY+AG5LbVo8lmxDD16Wq0CAwEAAaNQME4wHQYDVR0OBBYEFEVi
+  YyWHF3W7/O4NaTjn4lElLpp7MB8GA1UdIwQYMBaAFEViYyWHF3W7/O4NaTjn4lEl
+  Lpp7MAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEFBQADgYEAgIPGoxhUa16AgjZx
+  Jr1kUrs8Fg3ig8eRFQlBSLYfANIUxcQ2ScFAkmsvwXY3Md7uaSvMJsEl2jcjdmdi
+  eSreNkx85j9GtMLY/2cv0kF4yAQNRtibtDkbg6fRNkmUopDosJNVf79l1GKX8JFL
+  zZBOFdOaLYY/6dLRwiTUKHU6su8=
+  -----END CERTIFICATE-----
+

slapcache/test/base.py

+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2012-2014 Vifib SARL and Contributors.
+# All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly advised to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+
+def _fake_call(self, *args, **kw):
+  self.last_call = (args, kw)
+
+CONFIGURATION_FILE = """
+
+[networkcache]
+download-binary-cache-url = http://www.shacache.org/shacache
+download-cache-url = https://www.shacache.org/shacache
+download-binary-dir-url = http://www.shacache.org/shadir
+
+signature-certificate-list =
+  -----BEGIN CERTIFICATE-----
+  MIIB8DCCAVmgAwIBAgIJAPFf61p8y809MA0GCSqGSIb3DQEBBQUAMBAxDjAMBgNV
+  BAMMBUNPTVAtMCAXDTE0MDIxNzE2NDgxN1oYDzIxMTQwMTI0MTY0ODE3WjAQMQ4w
+  DAYDVQQDDAVDT01QLTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAsiqCyuv1
+  HO9FmtwnMbEa1/u8Dn7T0k7hVKYXVQYof+59Ltbb3cA3nLjFSJDr/wQT6N89MccS
+  PneRzkWqZKL06Kmj+N+XJfRyVaTz1qQtNzjdbYkO6RgQq+fvq2CO0+PSnL6NttLU
+  /a9nQMcVm7wZ8kmY+AG5LbVo8lmxDD16Wq0CAwEAAaNQME4wHQYDVR0OBBYEFEVi
+  YyWHF3W7/O4NaTjn4lElLpp7MB8GA1UdIwQYMBaAFEViYyWHF3W7/O4NaTjn4lEl
+  Lpp7MAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEFBQADgYEAgIPGoxhUa16AgjZx
+  Jr1kUrs8Fg3ig8eRFQlBSLYfANIUxcQ2ScFAkmsvwXY3Md7uaSvMJsEl2jcjdmdi
+  eSreNkx85j9GtMLY/2cv0kF4yAQNRtibtDkbg6fRNkmUopDosJNVf79l1GKX8JFL
+  zZBOFdOaLYY/6dLRwiTUKHU6su8=
+  -----END CERTIFICATE-----
+
+[slapupdate]
+upgrade_key = slapos-upgrade-testing-key-with-config-file
+
+"""
+
+UPGRADE_KEY = """[debian-default]
+repository-list = 
+	main = http://ftp.fr.debian.org/debian/ wheezy main
+	main-src = http://ftp.fr.debian.org/debian/ wheezy main
+	update = http://ftp.fr.debian.org/debian/ wheezy-updates main
+	update-src = http://ftp.fr.debian.org/debian/ wheezy-updates main
+	slapos = http://download.opensuse.org/repositories/home:/VIFIBnexedi:/branches:/home:/VIFIBnexedi/Debian_7.0/ ./
+	re6stnet = http://git.erp5.org/dist/deb ./
+key-list = 
+	slapos = http://git.erp5.org/gitweb/slapos.package.git/blob_plain/HEAD:/debian-preseed/slapos.openbuildservice.key
+	re6st = http://git.erp5.org/gitweb/slapos.package.git/blob_plain/HEAD:/debian-preseed/git.erp5.org.key
+filter-package-list = 
+	ntp
+	openvpn
+	slapos.node
+	re6stnet
+filter-promise-list = 
+	core
+signature-list = 
+	debian+++jessie/sid+++
+	debian+++7.4+++
+	debian+++7.5+++
+	debian+++7.3+++
+	debian+++7+++
+
+[opensuse-legacy]
+repository-list = 
+	suse = http://download.opensuse.org/distribution/12.1/repo/oss/
+	slapos = http://download.opensuse.org/repositories/home:/VIFIBnexedi:/branches:/home:/VIFIBnexedi/openSUSE_12.1/
+	re6st = http://git.erp5.org/dist/rpm
+key-list = 
+filter-promise-list = 
+	core
+filter-package-list = 
+	ntp
+	openvpn
+	slapos.node
+	re6stnet
+signature-list = 
+	opensuse+++12.1+++x86_64
+
+[system]
+reboot = 2011-10-10
+upgrade = 2014-06-04
+
+"""
+
+
+UPGRADE_KEY_WITHOUT_KEY_LIST = """[debian-default]
+repository-list = 
+	main = http://ftp.fr.debian.org/debian/ wheezy main
+	main-src = http://ftp.fr.debian.org/debian/ wheezy main
+	update = http://ftp.fr.debian.org/debian/ wheezy-updates main
+	update-src = http://ftp.fr.debian.org/debian/ wheezy-updates main
+	slapos = http://download.opensuse.org/repositories/home:/VIFIBnexedi:/branches:/home:/VIFIBnexedi/Debian_7.0/ ./
+	re6stnet = http://git.erp5.org/dist/deb ./
+filter-package-list = 
+	ntp
+	openvpn
+	slapos.node
+	re6stnet
+filter-promise-list = 
+	core
+signature-list = 
+	debian+++jessie/sid+++
+	debian+++7.4+++
+	debian+++7.5+++
+	debian+++7.3+++
+	debian+++7+++
+
+[opensuse-legacy]
+repository-list = 
+	suse = http://download.opensuse.org/distribution/12.1/repo/oss/
+	slapos = http://download.opensuse.org/repositories/home:/VIFIBnexedi:/branches:/home:/VIFIBnexedi/openSUSE_12.1/
+	re6st = http://git.erp5.org/dist/rpm
+filter-promise-list = 
+	core
+filter-package-list = 
+	ntp
+	openvpn
+	slapos.node
+	re6stnet
+signature-list = 
+	opensuse+++12.1+++x86_64
+
+[system]
+reboot = 2011-10-10
+upgrade = 2014-06-04
+
+"""
+
+

slapcache/upload.py

+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2012-2014 Vifib SARL and Contributors.
+# All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly advised to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import ConfigParser
+import datetime
+from optparse import OptionParser, Option
+import sys
+
+from signature import Signature, Config
+
+class Parser(OptionParser):
+  """
+  Parse all arguments.
+  """
+  def __init__(self, usage=None, version=None):
+    """
+    Initialize all options possibles.
+    """
+    OptionParser.__init__(self, usage=usage, version=version,
+                      option_list=[
+        Option("--slapos-configuration",
+               default='/etc/opt/slapcache.cfg',
+               help="Configuration File used to upload the key."),
+        Option("--file",
+               default='/etc/opt/slapos/slapos-upgrade',
+               help="File used as reference to upgrade."),
+        Option("-n", "--dry-run",
+               help="Simulate the execution steps",
+               default=False,
+               action="store_true"),
+        ])
+
+  def check_args(self):
+    """
+    Check arguments
+    """
+    (options, args) = self.parse_args()
+    return options
+
+
+# Utility fonction to get yes/no answers
+def get_yes_no(prompt):
+  while True:
+    answer = raw_input(prompt + " [y,n]: ")
+    if answer.upper() in ['Y', 'YES']:
+        return True
+    if answer.upper() in ['N', 'NO']:
+        return False
+
+def main():
+  """Upload file to update computer and slapos"""
+  usage = "usage: [options] "
+  # Parse arguments
+  config = Config(Parser(usage=usage).check_args())
+  Signature(config).upload()
+  sys.exit()