Adding everything for SSL support

slapos/recipe/kvm/__init__.py

@@ -32,7 +32,8 @@ import binascii
 import random
 import zc.buildout
 import pkg_resources
-
+import ConfigParser
+import hashlib
 
 class Recipe(BaseSlapRecipe):
 
@@ -59,7 +60,7 @@ class Recipe(BaseSlapRecipe):
     
     self.linkBinary()
     self.computer_partition.setConnectionDict(dict(
-        vnc_connection_string = "https://[%s]:%s" % (noVNC_conf['source_ip'],
+        vnc_connection_string = "https://[%s]:%s/vnc.html" % (noVNC_conf['source_ip'],
                                                      noVNC_conf['source_port'],
                                                      )))
     
@@ -162,6 +163,9 @@ class Recipe(BaseSlapRecipe):
     noVNC_conf['target_port']     = target_port
     noVNC_conf['python_path']     = python_path
 
+    noVNC_conf['ca_conf'] = self.installCertificateAuthority()
+    noVNC_conf['key_path'], noVNC_conf['certificate_path'] = self.requestCertificate('noVNC')
+
     # Instanciate Websockify
     websockify_runner_path = self.instanciate_wrapper("websockify",
         noVNC_conf)
@@ -211,3 +215,74 @@ class Recipe(BaseSlapRecipe):
       os.symlink(target, link)
       self.logger.debug('Created link %r -> %r' % (link, target))
       self.path_list.append(link)
+      
+  def installCertificateAuthority(self, ca_country_code='XX',
+      ca_email='xx@example.com', ca_state='State', ca_city='City',
+      ca_company='Company'):
+    backup_path = self.createBackupDirectory('ca')
+    self.ca_dir = os.path.join(self.data_root_directory, 'ca')
+    self._createDirectory(self.ca_dir)
+    self.ca_request_dir = os.path.join(self.ca_dir, 'requests')
+    self._createDirectory(self.ca_request_dir)
+    config = dict(ca_dir=self.ca_dir, request_dir=self.ca_request_dir)
+    self.ca_private = os.path.join(self.ca_dir, 'private')
+    self.ca_certs = os.path.join(self.ca_dir, 'certs')
+    self.ca_crl = os.path.join(self.ca_dir, 'crl')
+    self.ca_newcerts = os.path.join(self.ca_dir, 'newcerts')
+    self.ca_key_ext = '.key'
+    self.ca_crt_ext = '.crt'
+    for d in [self.ca_private, self.ca_crl, self.ca_newcerts, self.ca_certs]:
+      self._createDirectory(d)
+    for f in ['crlnumber', 'serial']:
+      if not os.path.exists(os.path.join(self.ca_dir, f)):
+        open(os.path.join(self.ca_dir, f), 'w').write('01')
+    if not os.path.exists(os.path.join(self.ca_dir, 'index.txt')):
+      open(os.path.join(self.ca_dir, 'index.txt'), 'w').write('')
+    openssl_configuration = os.path.join(self.ca_dir, 'openssl.cnf')
+    config.update(
+        working_directory=self.ca_dir,
+        country_code=ca_country_code,
+        state=ca_state,
+        city=ca_city,
+        company=ca_company,
+        email_address=ca_email,
+    )
+    self._writeFile(openssl_configuration, pkg_resources.resource_string(
+      __name__, 'template/openssl.cnf.ca.in') % config)
+    self.path_list.extend(zc.buildout.easy_install.scripts([
+      ('certificate_authority',
+        __name__ + '.certificate_authority', 'runCertificateAuthority')],
+        self.ws, sys.executable, self.wrapper_directory, arguments=[dict(
+          openssl_configuration=openssl_configuration,
+          openssl_binary=self.options['openssl_binary'],
+          certificate=os.path.join(self.ca_dir, 'cacert.pem'),
+          key=os.path.join(self.ca_private, 'cakey.pem'),
+          crl=os.path.join(self.ca_crl),
+          request_dir=self.ca_request_dir
+          )]))
+    # configure backup
+    backup_cron = os.path.join(self.cron_d, 'ca_rdiff_backup')
+    open(backup_cron, 'w').write(
+        '''0 0 * * * %(rdiff_backup)s %(source)s %(destination)s'''%dict(
+          rdiff_backup=self.options['rdiff_backup_binary'],
+          source=self.ca_dir,
+          destination=backup_path))
+    self.path_list.append(backup_cron)
+
+    return dict(
+      ca_certificate=os.path.join(config['ca_dir'], 'cacert.pem'),
+      ca_crl=os.path.join(config['ca_dir'], 'crl'),
+      certificate_authority_path=config['ca_dir']
+    )
+  
+  def requestCertificate(self, name):
+    hash = hashlib.sha512(name).hexdigest()
+    key = os.path.join(self.ca_private, hash + self.ca_key_ext)
+    certificate = os.path.join(self.ca_certs, hash + self.ca_crt_ext)
+    parser = ConfigParser.RawConfigParser()
+    parser.add_section('certificate')
+    parser.set('certificate', 'name', name)
+    parser.set('certificate', 'key_file', key)
+    parser.set('certificate', 'certificate_file', certificate)
+    parser.write(open(os.path.join(self.ca_request_dir, hash), 'w'))
+    return key, certificate

slapos/recipe/kvm/certificate_authority.py

+import os
+import subprocess
+import time
+import ConfigParser
+
+
+def popenCommunicate(command_list, input=None):
+  subprocess_kw = dict(stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+  if input is not None:
+    subprocess_kw.update(stdin=subprocess.PIPE)
+  popen = subprocess.Popen(command_list, **subprocess_kw)
+  result = popen.communicate(input)[0]
+  if popen.returncode is None:
+    popen.kill()
+  if popen.returncode != 0:
+    raise ValueError('Issue during calling %r, result was:\n%s' % (
+      command_list, result))
+  return result
+
+
+class CertificateAuthority:
+  def __init__(self, key, certificate, openssl_binary,
+      openssl_configuration, request_dir):
+    self.key = key
+    self.certificate = certificate
+    self.openssl_binary = openssl_binary
+    self.openssl_configuration = openssl_configuration
+    self.request_dir = request_dir
+
+  def checkAuthority(self):
+    file_list = [ self.key, self.certificate ]
+    ca_ready = True
+    for f in file_list:
+      if not os.path.exists(f):
+        ca_ready = False
+        break
+    if ca_ready:
+      return
+    for f in file_list:
+      if os.path.exists(f):
+        os.unlink(f)
+    try:
+      # no CA, let us create new one
+      popenCommunicate([self.openssl_binary, 'req', '-nodes', '-config',
+          self.openssl_configuration, '-new', '-x509', '-extensions',
+          'v3_ca', '-keyout', self.key, '-out', self.certificate,
+          '-days', '10950'], 'Automatic Certificate Authority\n')
+    except:
+      try:
+        for f in file_list:
+          if os.path.exists(f):
+            os.unlink(f)
+      except:
+        # do not raise during cleanup
+        pass
+      raise
+
+  def _checkCertificate(self, common_name, key, certificate):
+    file_list = [key, certificate]
+    ready = True
+    for f in file_list:
+      if not os.path.exists(f):
+        ready = False
+        break
+    if ready:
+      return False
+    for f in file_list:
+      if os.path.exists(f):
+        os.unlink(f)
+    csr = certificate + '.csr'
+    try:
+      popenCommunicate([self.openssl_binary, 'req', '-config',
+        self.openssl_configuration, '-nodes', '-new', '-keyout',
+        key, '-out', csr, '-days', '3650'],
+        common_name + '\n')
+      try:
+        popenCommunicate([self.openssl_binary, 'ca', '-batch', '-config',
+          self.openssl_configuration, '-out', certificate,
+          '-infiles', csr])
+      finally:
+        if os.path.exists(csr):
+          os.unlink(csr)
+    except:
+      try:
+        for f in file_list:
+          if os.path.exists(f):
+            os.unlink(f)
+      except:
+        # do not raise during cleanup
+        pass
+      raise
+    else:
+      return True
+
+  def checkRequestDir(self):
+    for request_file in os.listdir(self.request_dir):
+      parser = ConfigParser.RawConfigParser()
+      parser.readfp(open(os.path.join(self.request_dir, request_file), 'r'))
+      if self._checkCertificate(parser.get('certificate', 'name'),
+          parser.get('certificate', 'key_file'), parser.get('certificate',
+            'certificate_file')):
+        print 'Created certificate %r' % parser.get('certificate', 'name')
+
+def runCertificateAuthority(args):
+  ca_conf = args[0]
+  ca = CertificateAuthority(ca_conf['key'], ca_conf['certificate'],
+      ca_conf['openssl_binary'], ca_conf['openssl_configuration'],
+      ca_conf['request_dir'])
+  while True:
+    ca.checkAuthority()
+    ca.checkRequestDir()
+    time.sleep(60)