def test_generate_HmacSHA256_missing_hashlib_sha256(self):
# Stub out haslib.sha256
import hashlib
self.stubs.Set(hashlib, 'sha256', None)
# Create Signer again now that hashlib.sha256 is None
self.signer = signer.Signer('uV3F3YluFJax1cknvbcGwgjvx4QpvB+leU8dUj2o')
self.assertRaises(exception.Error, self.signer.generate, {
'SignatureVersion': '2',
'SignatureMethod': 'HmacSHA256'
}, 'GET', 'server', '/foo')
def _fetch_s3_image(image, path, user, project):
url = image_url(image)
# This should probably move somewhere else, like e.g. a download_as
# method on User objects and at the same time get rewritten to use
# a web client.
headers = {}
headers['Date'] = time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime())
(_, _, url_path, _, _, _) = urlparse.urlparse(url)
access = manager.AuthManager().get_access_key(user, project)
signature = signer.Signer(user.secret.encode()).s3_authorization(
headers, 'GET', url_path)
headers['Authorization'] = 'AWS %s:%s' % (access, signature)
if sys.platform.startswith('win'):
return _fetch_image_no_curl(url, path, headers)
else:
cmd = ['/usr/bin/curl', '--fail', '--silent', url]
for (k, v) in headers.iteritems():
cmd += ['-H', '\'%s: %s\'' % (k, v)]
cmd += ['-o', path]
return utils.execute(*cmd)
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)
def setUp(self):
super(SignerTestCase, self).setUp()
self.signer = signer.Signer('uV3F3YluFJax1cknvbcGwgjvx4QpvB+leU8dUj2o')
