def _validate_user_and_project(self, user_id, project_id):
user = db.user_get(context.get_admin_context(), user_id)
if not user:
raise exception.UserNotFound(user_id=user_id)
project = db.project_get(context.get_admin_context(), project_id)
if not project:
raise exception.ProjectNotFound(project_id=project_id)
return user, project
def decrypt_text(project_id, text):
private_key_file = key_path(project_id)
if not os.path.exists(private_key_file):
raise exception.ProjectNotFound(project_id=project_id)
with open(private_key_file, 'rb') as f:
data = f.read()
try:
priv_key = serialization.load_pem_private_key(
data, None, backends.default_backend())
return priv_key.decrypt(text, padding.PKCS1v15())
except (ValueError, TypeError, exceptions.UnsupportedAlgorithm) as exc:
raise exception.DecryptionFailure(reason=six.text_type(exc))
def revoke_cert(project_id, file_name):
"""Revoke a cert by file name."""
try:
# NOTE(vish): potential race condition here
utils.execute('openssl', 'ca', '-config', './openssl.cnf', '-revoke',
file_name, cwd=ca_folder(project_id))
utils.execute('openssl', 'ca', '-gencrl', '-config', './openssl.cnf',
'-out', CONF.crl_file, cwd=ca_folder(project_id))
except OSError:
raise exception.ProjectNotFound(project_id=project_id)
except processutils.ProcessExecutionError:
raise exception.RevokeCertFailure(project_id=project_id)
def decrypt_text(project_id, text):
private_key = key_path(project_id)
if not os.path.exists(private_key):
raise exception.ProjectNotFound(project_id=project_id)
try:
dec, _err = utils.execute('openssl',
'rsautl',
'-decrypt',
'-inkey', '%s' % private_key,
process_input=text)
return dec
except processutils.ProcessExecutionError as exc:
raise exception.DecryptionFailure(reason=exc.stderr)
def revoke_cert(project_id, file_name):
"""Revoke a cert by file name."""
start = os.getcwd()
if not os.chdir(ca_folder(project_id)):
raise exception.ProjectNotFound(project_id=project_id)
try:
# NOTE(vish): potential race condition here
utils.execute('openssl', 'ca', '-config', './openssl.cnf', '-revoke',
file_name)
utils.execute('openssl', 'ca', '-gencrl', '-config', './openssl.cnf',
'-out', CONF.crl_file)
except processutils.ProcessExecutionError:
raise exception.RevokeCertFailure(project_id=project_id)
finally:
os.chdir(start)
def authenticate(self, access, signature, params, verb='GET',
server_string='127.0.0.1:8773', path='/',
check_type='ec2', headers=None):
"""Authenticates AWS request using access key and signature
If the project is not specified, attempts to authenticate to
a project with the same name as the user. This way, older tools
that have no project knowledge will still work.
@type access: str
@param access: Access key for user in the form "access:project".
@type signature: str
@param signature: Signature of the request.
@type params: list of str
@param params: Web paramaters used for the signature.
@type verb: str
@param verb: Web request verb ('GET' or 'POST').
@type server_string: str
@param server_string: Web request server string.
@type path: str
@param path: Web request path.
@type check_type: str
@param check_type: Type of signature to check. 'ec2' for EC2, 's3' for
S3. Any other value will cause signature not to be
checked.
@type headers: list
@param headers: HTTP headers passed with the request (only needed for
s3 signature checks)
@rtype: tuple (User, Project)
@return: User and project that the request represents.
"""
# TODO(vish): check for valid timestamp
(access_key, _sep, project_id) = access.partition(':')
LOG.debug(_('Looking up user: %r'), access_key)
user = self.get_user_from_access_key(access_key)
LOG.debug('user: %r', user)
if user is None:
LOG.audit(_("Failed authorization for access key %s"), access_key)
raise exception.AccessKeyNotFound(access_key=access_key)
# NOTE(vish): if we stop using project name as id we need better
# logic to find a default project for user
if project_id == '':
LOG.debug(_("Using project name = user name (%s)"), user.name)
project_id = user.name
project = self.get_project(project_id)
if project is None:
pjid = project_id
uname = user.name
LOG.audit(_("failed authorization: no project named %(pjid)s"
" (user=%(uname)s)") % locals())
raise exception.ProjectNotFound(project_id=project_id)
if not self.is_admin(user) and not self.is_project_member(user,
project):
uname = user.name
uid = user.id
pjname = project.name
pjid = project.id
LOG.audit(_("Failed authorization: user %(uname)s not admin"
" and not member of project %(pjname)s") % locals())
raise exception.ProjectMembershipNotFound(project_id=pjid,
user_id=uid)
if check_type == 's3':
sign = signer.Signer(user.secret.encode())
expected_signature = sign.s3_authorization(headers, verb, path)
LOG.debug(_('user.secret: %s'), user.secret)
LOG.debug(_('expected_signature: %s'), expected_signature)
LOG.debug(_('signature: %s'), signature)
if signature != expected_signature:
LOG.audit(_("Invalid signature for user %s"), user.name)
raise exception.InvalidSignature(signature=signature,
user=user)
elif check_type == 'ec2':
# NOTE(vish): hmac can't handle unicode, so encode ensures that
# secret isn't unicode
expected_signature = signer.Signer(user.secret.encode()).generate(
params, verb, server_string, path)
LOG.debug(_('user.secret: %s'), user.secret)
LOG.debug(_('expected_signature: %s'), expected_signature)
LOG.debug(_('signature: %s'), signature)
if signature != expected_signature:
(addr_str, port_str) = utils.parse_server_string(server_string)
# If the given server_string contains port num, try without it.
if port_str != '':
host_only_signature = signer.Signer(
user.secret.encode()).generate(params, verb,
addr_str, path)
LOG.debug(_('host_only_signature: %s'),
host_only_signature)
if signature == host_only_signature:
return (user, project)
LOG.audit(_("Invalid signature for user %s"), user.name)
raise exception.InvalidSignature(signature=signature,
user=user)
return (user, project)
