def agent_visit(url, request):
if request.method != "POST":
raise Exception('unexpected method')
log.info('agent_visit url {}'.format(url))
body = json.loads(request.body.decode('utf-8'))
if body['username'] != 'test-user':
raise Exception('unexpected username in body {!r}'.format(
request.body))
public_key = bakery.PublicKey.deserialize(body['public_key'])
ms = httpbakery.extract_macaroons(request.headers)
if len(ms) == 0:
b = bakery.Bakery(key=discharge_key)
m = b.oven.macaroon(
version=bakery.LATEST_VERSION,
expiry=datetime.utcnow() + timedelta(days=1),
caveats=[
bakery.local_third_party_caveat(
public_key,
version=httpbakery.request_version(
request.headers))
],
ops=[bakery.Op(entity='agent', action='login')])
content, headers = httpbakery.discharge_required_response(
m, '/', 'test', 'message')
resp = response(status_code=401,
content=content,
headers=headers)
return request.hooks['response'][0](resp)
return {'status_code': 200, 'content': {'agent_login': True}}
def _setup_bakery(self, auth_endpoint, request):
return bakery.Bakery(
key=_get_macaroon_oven_key(),
root_key_store=KeyStore(MACAROON_LIFESPAN),
location=request.build_absolute_uri('/'),
locator=httpbakery.ThirdPartyLocator(
allow_insecure=not auth_endpoint.startswith('https:')),
identity_client=IDClient(auth_endpoint),
authorizer=bakery.ACLAuthorizer(
get_acl=lambda ctx, op: [bakery.EVERYONE]))
def login(url, request):
b = bakery.Bakery(key=discharge_key)
m = b.oven.macaroon(
version=bakery.LATEST_VERSION,
expiry=datetime.utcnow() + timedelta(days=1),
caveats=[
bakery.local_third_party_caveat(
auth_info.key.public_key,
version=httpbakery.request_version(request.headers))
],
ops=[bakery.Op(entity='agent', action='login')])
return {'status_code': 200, 'content': {'macaroon': m.to_dict()}}
def _get_bakery(request):
auth_endpoint = request.external_auth_info.url
auth_domain = request.external_auth_info.domain
return bakery.Bakery(
key=_get_macaroon_oven_key(),
root_key_store=KeyStore(MACAROON_LIFESPAN),
location=request.build_absolute_uri("/"),
locator=httpbakery.ThirdPartyLocator(
allow_insecure=not auth_endpoint.startswith("https:")),
identity_client=_IDClient(auth_endpoint, auth_domain=auth_domain),
authorizer=bakery.ACLAuthorizer(
get_acl=lambda ctx, op: [bakery.EVERYONE]),
)
def test_version1_macaroon_id(self):
# In the version 1 bakery, macaroon ids were hex-encoded with a
# hyphenated UUID suffix.
root_key_store = bakery.MemoryKeyStore()
b = bakery.Bakery(
root_key_store=root_key_store,
identity_client=common.OneIdentity(),
)
key, id = root_key_store.root_key()
root_key_store.get(id)
m = Macaroon(key=key, version=MACAROON_V1, location='',
identifier=id + b'-deadl00f')
b.checker.auth([[m]]).allow(common.test_context,
[bakery.LOGIN_OP])
def is_authorized(*args, **kwargs):
macaroon_bakery = bakery.Bakery(
location="ubuntu.com/security",
locator=httpbakery.ThirdPartyLocator(),
identity_client=IdentityClient(),
key=bakery.generate_key(),
root_key_store=bakery.MemoryKeyStore(
flask.current_app.config["SECRET_KEY"]),
)
macaroons = httpbakery.extract_macaroons(flask.request.headers)
auth_checker = macaroon_bakery.checker.auth(macaroons)
launchpad = Launchpad.login_anonymously("ubuntu.com/security",
"production",
version="devel")
try:
auth_info = auth_checker.allow(checkers.AuthContext(),
[bakery.LOGIN_OP])
except bakery._error.DischargeRequiredError:
macaroon = macaroon_bakery.oven.macaroon(
version=bakery.VERSION_2,
expiry=datetime.utcnow() + timedelta(days=1),
caveats=IDENTITY_CAVEATS,
ops=[bakery.LOGIN_OP],
)
content, headers = httpbakery.discharge_required_response(
macaroon, "/", "cookie-suffix")
return content, 401, headers
username = auth_info.identity.username()
lp_user = launchpad.people(username)
authorized = False
for team in AUTHORIZED_TEAMS:
if lp_user in launchpad.people(team).members:
authorized = True
break
if not authorized:
return (
f"{username} is not in any of the authorized teams: "
f"{str(AUTHORIZED_TEAMS)}",
401,
)
# Validate authentication token
return func(*args, **kwargs)
def __init__(self, locator=None):
locator = httpbakery.ThirdPartyLocator()
# generate a new keypair for encrypting third party caveats
# it's safe to use a new keypair every time the server starts
# as it's used only for encrypting the third party caveats
# for sending them to be discharged. The private key doesn't need
# to survive across restarts.
key = bakery.generate_key()
location = 'localhost:8000'
root_key = 'private-key'
self._bakery = bakery.Bakery(
location=location, locator=locator,
identity_client=IdentityClient(), key=key,
root_key_store=bakery.MemoryKeyStore(root_key))
def test_third_party_discharge_macaroon_wrong_root_key_and_third_party_caveat(
self):
root_keys = bakery.MemoryKeyStore()
ts = bakery.Bakery(
key=bakery.generate_key(),
checker=common.test_checker(),
root_key_store=root_keys,
identity_client=common.OneIdentity(),
)
locator = bakery.ThirdPartyStore()
bs = common.new_bakery('bs-loc', locator)
# ts creates a macaroon with a third party caveat addressed to bs.
ts_macaroon = ts.oven.macaroon(bakery.LATEST_VERSION, common.ages,
None, [bakery.LOGIN_OP])
ts_macaroon.add_caveat(
checkers.Caveat(location='bs-loc', condition='true'),
ts.oven.key,
locator,
)
def get_discharge(cav, payload):
return bakery.discharge(
common.test_context,
cav.caveat_id_bytes,
payload,
bs.oven.key,
common.ThirdPartyStrcmpChecker('true'),
bs.oven.locator,
)
d = bakery.discharge_all(ts_macaroon, get_discharge)
# The authorization should succeed at first.
ts.checker.auth([d]).allow(common.test_context, [bakery.LOGIN_OP])
# Corrupt the root key and try again.
# We should get a DischargeRequiredError because the verification has failed.
root_keys._key = os.urandom(24)
with self.assertRaises(bakery.PermissionDenied) as err:
ts.checker.auth([d]).allow(common.test_context, [bakery.LOGIN_OP])
self.assertEqual(
str(err.exception),
'verification failed: Decryption failed. Ciphertext failed verification'
)
def login(url, request):
qs = parse_qs(urlparse(request.url).query)
self.assertEqual(request.method, 'GET')
self.assertEqual(qs, {
'username': ['test-user'],
'public-key': [PUBLIC_KEY]
})
b = bakery.Bakery(key=discharge_key)
m = b.oven.macaroon(
version=bakery.LATEST_VERSION,
expiry=datetime.utcnow() + timedelta(days=1),
caveats=[
bakery.local_third_party_caveat(
PUBLIC_KEY,
version=httpbakery.request_version(request.headers))
],
ops=[bakery.Op(entity='agent', action='login')])
return {'status_code': 200, 'content': {'macaroon': m.to_dict()}}
def new_bakery(location, locator=None):
# Returns a new Bakery instance using a new
# key pair, and registers the key with the given locator if provided.
#
# It uses test_checker to check first party caveats.
key = bakery.generate_key()
if locator is not None:
locator.add_info(
location,
bakery.ThirdPartyInfo(public_key=key.public_key,
version=bakery.LATEST_VERSION))
return bakery.Bakery(
key=key,
checker=test_checker(),
location=location,
identity_client=OneIdentity(),
locator=locator,
)
def new_bakery(location, locator, checker):
'''Return a new bakery instance.
@param location Location of the bakery {str}.
@param locator Locator for third parties {ThirdPartyLocator or None}
@param checker Caveat checker {FirstPartyCaveatChecker or None}
@return {Bakery}
'''
if checker is None:
c = checkers.Checker()
c.namespace().register('testns', '')
c.register('is', 'testns', check_is_something)
checker = c
key = bakery.generate_key()
return bakery.Bakery(
location=location,
locator=locator,
key=key,
checker=checker,
)
def test_agent_login(self):
discharge_key = bakery.generate_key()
class _DischargerLocator(bakery.ThirdPartyLocator):
def third_party_info(self, loc):
if loc == 'http://0.3.2.1':
return bakery.ThirdPartyInfo(
public_key=discharge_key.public_key,
version=bakery.LATEST_VERSION,
)
d = _DischargerLocator()
server_key = bakery.generate_key()
server_bakery = bakery.Bakery(key=server_key, locator=d)
@urlmatch(path='.*/here')
def server_get(url, request):
ctx = checkers.AuthContext()
test_ops = [bakery.Op(entity='test-op', action='read')]
auth_checker = server_bakery.checker.auth(
httpbakery.extract_macaroons(request.headers))
try:
auth_checker.allow(ctx, test_ops)
resp = response(status_code=200, content='done')
except bakery.PermissionDenied:
caveats = [
checkers.Caveat(location='http://0.3.2.1',
condition='is-ok')
]
m = server_bakery.oven.macaroon(version=bakery.LATEST_VERSION,
expiry=datetime.utcnow() +
timedelta(days=1),
caveats=caveats,
ops=test_ops)
content, headers = httpbakery.discharge_required_response(
m, '/', 'test', 'message')
resp = response(status_code=401,
content=content,
headers=headers)
return request.hooks['response'][0](resp)
@urlmatch(path='.*/discharge')
def discharge(url, request):
qs = parse_qs(request.body)
if qs.get('token64') is None:
return response(status_code=401,
content={
'Code':
httpbakery.ERR_INTERACTION_REQUIRED,
'Message': 'interaction required',
'Info': {
'InteractionMethods': {
'agent': {
'login-url': '/login'
},
},
},
},
headers={'Content-Type': 'application/json'})
else:
qs = parse_qs(request.body)
content = {q: qs[q][0] for q in qs}
m = httpbakery.discharge(checkers.AuthContext(), content,
discharge_key, None, alwaysOK3rd)
return {
'status_code': 200,
'content': {
'Macaroon': m.to_dict()
}
}
auth_info = agent.load_auth_info(self.agent_filename)
@urlmatch(path='.*/login')
def login(url, request):
b = bakery.Bakery(key=discharge_key)
m = b.oven.macaroon(
version=bakery.LATEST_VERSION,
expiry=datetime.utcnow() + timedelta(days=1),
caveats=[
bakery.local_third_party_caveat(
auth_info.key.public_key,
version=httpbakery.request_version(request.headers))
],
ops=[bakery.Op(entity='agent', action='login')])
return {'status_code': 200, 'content': {'macaroon': m.to_dict()}}
with HTTMock(server_get), \
HTTMock(discharge), \
HTTMock(login):
client = httpbakery.Client(interaction_methods=[
agent.AgentInteractor(auth_info),
])
resp = requests.get('http://0.1.2.3/here',
cookies=client.cookies,
auth=client.auth())
self.assertEquals(resp.content, b'done')
def test_agent_legacy(self):
discharge_key = bakery.generate_key()
class _DischargerLocator(bakery.ThirdPartyLocator):
def third_party_info(self, loc):
if loc == 'http://0.3.2.1':
return bakery.ThirdPartyInfo(
public_key=discharge_key.public_key,
version=bakery.LATEST_VERSION,
)
d = _DischargerLocator()
server_key = bakery.generate_key()
server_bakery = bakery.Bakery(key=server_key, locator=d)
@urlmatch(path='.*/here')
def server_get(url, request):
ctx = checkers.AuthContext()
test_ops = [bakery.Op(entity='test-op', action='read')]
auth_checker = server_bakery.checker.auth(
httpbakery.extract_macaroons(request.headers))
try:
auth_checker.allow(ctx, test_ops)
resp = response(status_code=200, content='done')
except bakery.PermissionDenied:
caveats = [
checkers.Caveat(location='http://0.3.2.1',
condition='is-ok')
]
m = server_bakery.oven.macaroon(version=bakery.LATEST_VERSION,
expiry=datetime.utcnow() +
timedelta(days=1),
caveats=caveats,
ops=test_ops)
content, headers = httpbakery.discharge_required_response(
m, '/', 'test', 'message')
resp = response(
status_code=401,
content=content,
headers=headers,
)
return request.hooks['response'][0](resp)
class InfoStorage:
info = None
@urlmatch(path='.*/discharge')
def discharge(url, request):
qs = parse_qs(request.body)
if qs.get('caveat64') is not None:
content = {q: qs[q][0] for q in qs}
class InteractionRequiredError(Exception):
def __init__(self, error):
self.error = error
class CheckerInError(bakery.ThirdPartyCaveatChecker):
def check_third_party_caveat(self, ctx, info):
InfoStorage.info = info
raise InteractionRequiredError(
httpbakery.Error(
code=httpbakery.ERR_INTERACTION_REQUIRED,
version=httpbakery.request_version(
request.headers),
message='interaction required',
info=httpbakery.ErrorInfo(
wait_url='http://0.3.2.1/wait?'
'dischargeid=1',
visit_url='http://0.3.2.1/visit?'
'dischargeid=1'),
), )
try:
httpbakery.discharge(checkers.AuthContext(), content,
discharge_key, None, CheckerInError())
except InteractionRequiredError as exc:
return response(
status_code=401,
content={
'Code': exc.error.code,
'Message': exc.error.message,
'Info': {
'WaitURL': exc.error.info.wait_url,
'VisitURL': exc.error.info.visit_url,
},
},
headers={'Content-Type': 'application/json'})
key = bakery.generate_key()
@urlmatch(path='.*/visit')
def visit(url, request):
if request.headers.get('Accept') == 'application/json':
return {
'status_code': 200,
'content': {
'agent': '/agent-visit',
}
}
raise Exception('unexpected call to visit without Accept header')
@urlmatch(path='.*/agent-visit')
def agent_visit(url, request):
if request.method != "POST":
raise Exception('unexpected method')
log.info('agent_visit url {}'.format(url))
body = json.loads(request.body.decode('utf-8'))
if body['username'] != 'test-user':
raise Exception('unexpected username in body {!r}'.format(
request.body))
public_key = bakery.PublicKey.deserialize(body['public_key'])
ms = httpbakery.extract_macaroons(request.headers)
if len(ms) == 0:
b = bakery.Bakery(key=discharge_key)
m = b.oven.macaroon(
version=bakery.LATEST_VERSION,
expiry=datetime.utcnow() + timedelta(days=1),
caveats=[
bakery.local_third_party_caveat(
public_key,
version=httpbakery.request_version(
request.headers))
],
ops=[bakery.Op(entity='agent', action='login')])
content, headers = httpbakery.discharge_required_response(
m, '/', 'test', 'message')
resp = response(status_code=401,
content=content,
headers=headers)
return request.hooks['response'][0](resp)
return {'status_code': 200, 'content': {'agent_login': True}}
@urlmatch(path='.*/wait$')
def wait(url, request):
class EmptyChecker(bakery.ThirdPartyCaveatChecker):
def check_third_party_caveat(self, ctx, info):
return []
if InfoStorage.info is None:
self.fail('visit url has not been visited')
m = bakery.discharge(
checkers.AuthContext(),
InfoStorage.info.id,
InfoStorage.info.caveat,
discharge_key,
EmptyChecker(),
_DischargerLocator(),
)
return {'status_code': 200, 'content': {'Macaroon': m.to_dict()}}
with HTTMock(server_get), \
HTTMock(discharge), \
HTTMock(visit), \
HTTMock(wait), \
HTTMock(agent_visit):
client = httpbakery.Client(interaction_methods=[
agent.AgentInteractor(
agent.AuthInfo(
key=key,
agents=[
agent.Agent(username='******',
url=u'http://0.3.2.1')
],
), ),
])
resp = requests.get(
'http://0.1.2.3/here',
cookies=client.cookies,
auth=client.auth(),
)
self.assertEquals(resp.content, b'done')
